RV/Marine
The Truth About the Geo-Method for DIY Black Tank Maintenance
For RVers trying to keep their black holding tanks free from odors and clogs, the “Geo-Method” is often seen as a popular, budget-friendly black tank cleaning solution. It involves combining water softeners (like Calgon), laundry detergent, and sometimes bleach to “clean” and deodorize tanks. But while it’s a well-meaning attempt at RV black tank maintenance, it has some serious limitations compared to professionally formulated black tank treatments.
Let’s break it down.
The Appeal of the Geo-Method
The Geo-Method is simple and accessible. Most DIY tank cleaning recipes recommend mixing powdered water softener and detergent with water. The theory is that the water softener helps waste slide off tank walls, and the detergent keeps things smelling fresh. It’s also seen as a natural RV tank solution due to its household ingredients.
However, from a scientific perspective, this method is largely ineffective for long-term maintenance. Walex's Ph.D chemist, an RVer himself, weighed in, saying that "while soft water and detergent may provide some benefit in helping waste move, they do nothing to actually digest or neutralize odor-causing waste compounds. Plus, many of these methods lack enzyme or bacterial action, meaning they don't break down solids or toilet paper at a meaningful level."
The Science Behind Real Waste Breakdown
Walex products like Bio-Fresh, Bio-Pak and Commando are developed with precise formulations based on lab testing and decades of sanitation expertise. Bio-Fresh and Bio-Pak contain enzymes that specifically target and digest RV toilet paper and another enzyme system targets odor molecules. Additionally, Bio-Fresh contains beneficial bacteria that break down waste and also aid in odor control.
Commando, on the other hand, is a high-strength solution that tackles residual waste build-up and sensor issues in just 12–24 hours. Its powerful enzyme formula not only restores sensor function but also eliminates odors and lubricates valves and seals.
Unlike the Geo-Method, Bio-Fresh, Bio-Pak and Commando are also safe RV tank cleaning solutions. They’re biodegradable, septic-safe, formaldehyde-free, and compliant with environmental regulations in every state—perfect for those focused on eco-friendly RV care.
Why DIY Just Isn’t Enough
Yes, using plenty of water (as the Geo-Method suggests) is always a good practice, but relying on laundry detergent and softeners is not effective RV holding tank odor control. These mixtures don’t address the root of the problem: undigested waste and odor-causing bacteria.
Plus, DIY mixtures often contain bleach, which is a reactive chemical that can damage seals and tank walls over time. This makes “homemade RV tank cleaner” solutions not only ineffective but potentially harmful in the long run.
A Better Way to Care for Your RV
Walex’s full suite of treatments—from the odor control powerhouse, Porta-Pak, to the digestion specialist, Bio-Fresh—are scientifically designed for black and grey tank care. Whether you’re dealing with sensors stuck at ⅔ full, foul tank odors, or tough paper clogs, there’s a precise product that solves your problem.
Even Calgon water softener RV tips and tricks can’t match the performance of Walex’s targeted formulas, which are optimized through years of microbial testing and extensive field use.
The Bottom Line
When it comes to RV sanitation tips, ditch the DIY in favor of scientifically-developed, professionally tested, RVer-trusted solutions. Walex holding tank treatments provide the performance, convenience, and environmental responsibility you need for safe, effective, and odor-free adventures.
Complete Spring RV Cleaning Checklist: Inside and Out
Complete Spring RV Cleaning Checklist: Inside and Out
Quick Answer: To get your RV road-ready for summer, clean the exterior, roof, and awning; sanitize the interior; deep-clean the black and grey tanks; and eliminate lingering odors with targeted treatments.
1. Clean the RV Exterior
Winter storage can leave behind dirt, oxidation streaks, mildew, and road grime. A thorough exterior wash protects your RV’s finish and keeps it looking new.
- Wash & Wax: A high-foam cleaner that removes dirt while leaving a protective barrier to repel water and grime.
- Black Streak Remover: Targets oxidation streaks along sidewalls.
- Mold & Mildew Remover: Eliminates algae and mildew stains on trim, vinyl, and plastic surfaces.
Pro Tip: Always clean from the roof down to avoid re-soiling freshly cleaned areas.
2. Refresh the RV Awning
Awnings collect bird droppings, dirt, and mildew during storage.
- Use a fabric-safe awning cleaner.
- Spray evenly, scrub gently with a soft brush, and rinse thoroughly.
Tip: Let the awning dry completely before retracting to prevent mold growth.
3. Clean and Protect the Roof
Your roof protects everything beneath it. Regular cleaning removes tree sap, road grime, and debris that can cause long-term damage.
- Use a rubber roof cleaner designed to remove buildup.
- Apply in sections and rinse thoroughly.
Look for formulas that include UV protection to extend roof life.
4. Sanitize the Interior
Kitchen and bathroom surfaces need RV-safe cleaning solutions that won’t harm plumbing, holding tanks or holding tank treatments.
- Use a non-abrasive kitchen & bath cleaner for countertops and sinks.
- Use a toilet bowl cleaner formulated specifically for RV systems.
Tip: Always choose products safe for seals and tank treatments.
5. Deep Clean the Black Holding Tank
A clean black tank prevents odors and restores accurate sensor readings.
- Empty and rinse the tank.
- Add a concentrated black tank cleaner such as Commando.
- Fill the tank with water and let sit 12–24 hours.
- Dump and rinse again.
Repeat every three months for preventative maintenance.
6. Eliminate Grey Tank Odors
Grey tanks collect soap, grease, and organic residue that can cause odors.
- Use an enzyme-based grey tank treatment such as Elemonate.
- Drop a tablet in the sink and run water briefly to dissolve.
Regular use keeps drains fresh and free-flowing.
7. Finish with Interior Odor Control
After deep cleaning, neutralize lingering odors from trash, pets, or storage.
- Use an odor eliminator spray that destroys odor molecules on contact.
- Apply near trash bins, storage compartments, and under tanks.
Keeping interior air fresh enhances every trip.
Final Thoughts
Spring is the perfect time to reset your RV for the season ahead. With a thorough cleaning and targeted tank maintenance, your rig will be spotless, odor-free, and ready for adventure.
Ready to roll? Stock up on RV cleaning essentials at your local RV dealer and start the season fresh!
You're Going to Love Walex RV's New Premium Products for 2025!
Walex is excited to announce our new products for 2025 that include the latest premium liquid holding tank treatments and cleaning solutions. Designed to meet the diverse needs of RV and Marine consumers, these new products bring superior performance, refreshing fragrances, and versatile options to the market. Many of the new additions introduce liquid versions of Walex’s best-selling holding tank treatments that have previously been available only in a sachet, drop-in form. The liquid versions offer a new solution to satisfy the needs of every Walex customer.
Check out the list below of all our new RV/Marine products for 2025 and be sure to contact your authorized retailer or distributor for information on how to purchase yours.
Bio-Fresh Liquid Enzyme-Based Holding Tank Treatment
A liquid adaptation of our industry-leading Bio-Pak formula that combines advanced enzyme technology for exceptional deodorization and efficient waste and paper digestion. It is available in two refreshing fragrances, Ocean Mist and Alpine Fresh, and comes in three convenient sizes: 32oz, 64oz, and 1-Gallon.
BIO-FRESH - Ocean Mist Scent
BIOFROM32 Bio-Fresh 32 oz Ocean Mist, Case (8/cs)
BIOFROM64 Bio-Fresh 64 oz Ocean Mist Case (8/cs)
BIOFROM1G Bio-Fresh 1-Gallon Ocean Mist, Case (4/cs)
BIOFROM32CA Bio-Fresh 32 oz Ocean Mist, Dual Language, Case (8/cs)
BIOFROM64CA Bio-Fresh 64 oz Ocean Mist, Dual Language, Case (8/cs)
BIOFROM1GCA Bio-Fresh 1-Gallon Ocean Mist, Dual Language, Case (4/cs)
BIO-FRESH - Alpine Fresh Scent
BIOFRAF32 Bio-Fresh 32 oz Alpine Fresh, Case (8/cs)
BIOFRAF64 Bio-Fresh 64 oz Alpine Fresh, Case (8/cs)
BIOFRAF1G Bio-Fresh 1-GallonAlpine Fresh, Case (4/cs)
BIOFRAF32CA Bio-Fresh 32 oz Alpine Fresh, Dual Language, Case (8/cs)
BIOFRAF64CA Bio-Fresh 64 oz Alpine Fresh, Dual Language, Case (8/cs)
BIOFRAF1GCA Bio-Fresh 1-Gallon Alpine Fresh, Dual Language, Case (4/cs)
Citra-Fresh Liquid Holding Tank Deodorizer
This premium liquid product offers a powerful deodorizing solution featuring an invigorating Citrus fragrance. It delivers robust odor control technology and is available in 32oz, 64oz, and 1-Gallon sizes.
CITRAFR32 Citra-Fresh 32 oz Citrus, Case (8/cs)
CITRAFR64 Citra-Fresh 64 oz Citrus, Case (8/cs)
CITRAFR1G Citra-Fresh 1-Gallon Citrus, Case (4/cs)
CITRAFR32CA Citra-Fresh 32 oz Citrus, Dual Language, Case (8/cs)
CITRAFR64CA Citra-Fresh 64 oz Citrus, Dual Language, Case (8/cs)
CITRAFR1GCA Citra-Fresh 1-Gallon Citrus, Dual Language, Case (4/cs)
Commando Liquid Black Holding Tank and Sensor Cleaner
Commando liquid provides a high-powered, advanced solution for deep cleaning and sensor restoration. This scientifically developed formula contains natural enzymes that easily maintain holding tanks with heavy build-up. Now available in a user-friendly 32oz liquid formula.
CMDOLQ32 Commando 32 oz Liquid, Case (8/cs)
CMDOLQ32CA Commando 32 oz Liquid, Dual Language, Case (8/cs)
Elemonate Liquid Grey Water Deodorizer
Elemonate tackles tough grey water tank odors with ease and efficiency. It is now offered in a 32oz liquid option for enhanced usability, ensuring your grey water tanks remain fresh and odor-free.
ELEMLQ32 Elemonate 32 oz Liquid, Case (8/cs)
ELEMLQ32CA Elemonate 32 oz Liquid, Dual Language, Case (8/cs)
Fresh-Pak Holding Tank Treatment
An all-new drop-in addition to our premium line that offers an easy-to-use, high-performance solution for holding tank treatment. It comes in a convenient 30-pack, perfect for effortless maintenance of tank hygiene.
FRESHPAK30 Fresh-Pak, 30 Pack, Case (8/cs)
FRESHPAK30CA Fresh-Pak, 30 Pack, Dual Language, Case (8/cs)
RV/Marine Wash & Wax
Our premium solution combines washing and waxing in one easy step. The high-foam, deep-cleaning formula uses advanced polymer technology, leaving a brilliant, long-lasting shine. Available in 32oz, 64oz, 1-Gallon, and 5-Gallon sizes.
WALWW32 RV/Marine Wash & Wax, 32 oz, Case (8/cs)
WALWW64 RV/Marine Wash & Wax, 64 oz, Case (8/cs)
WALWW1G RV/Marine Wash & Wax, 1-Gallon, Case (4/cs)
WALWW5G RV/Marine Wash & Wax, 5-Gallon, Single (1)
WALWW32CA RV/Marine Wash & Wax, 32 oz, Dual Language, Case (8/cs)
WALWW64CA RV/Marine Wash & Wax, 64 oz, Dual Language, Case (8/cs)
WALWW1GCA RV/Marine Wash & Wax, 1-Gallon, Dual Language, Case (4/cs)
WALWW5GCA RV/Marine Wash & Wax, 5-Gallon, Dual Language, Single (1)
Walex is committed to delivering premium, versatile products that align with your unique preferences and needs. Our expansion reflects our dedication to innovation and our mission to offer comprehensive solutions for every holding tank and cleaning challenge.
Exciting Launch: Popular RV Tank Treatments Now Available in Liquid Formulas
Walex is revolutionizing the RV and marine sanitation market once again with the launch of four innovative liquid formulas in 2025. Meet the new lineup: Bio-Fresh, Citra-Fresh, Elemonate Liquid, and Commando Liquid. These products build on Walex's legacy of superior sanitation and odor control while offering eco-friendly and user-friendly solutions. Here’s what you need to know:
Bio-Fresh: The Eco-Friendly Odor Fighter
Bio-Fresh is the perfect companion for RV and marine holding tanks. Designed with an innovative enzyme formula, it eliminates odors naturally while breaking down waste and paper, eliminating the need for special RV toilet paper!
- Features:
- Biocide-free and formaldehyde-free.
- Safe for septic systems and environmentally sensitive areas.
- Provides long-lasting odor control with a pleasant fresh scent.
Perfect for environmentally conscious RVers, Bio-Fresh ensures your tank is clean and your adventure is green.
Citra-Fresh: Odor Control Meets Citrus Bliss
Citra-Fresh brings a touch of luxury to RV sanitation. This liquid deodorizer combines powerful odor control with a natural citrus fragrance for a premium experience.
- Features:
- Cleans sensors while breaking down waste and toilet paper.
- Formaldehyde-free and non-staining formula.
- Provides up to 7 days of odor control.
Citra-Fresh is ideal for anyone who values both effectiveness and a delightful scent.
Elemonate Liquid: The Ultimate Grey Tank Deodorizer
Now available in a liquid formula, Elemonate offers unmatched grey tank maintenance. It dissolves grease, food particles, and soap scum, keeping your grey tanks and drain lines odor-free.
- Features:
- Triple-action formula: deodorizes, cleans, and freshens.
- Leaves a fresh lemon fragrance behind.
- Quick-acting enzymes that are septic-safe.
Whether in your RV or home sink, Elemonate Liquid keeps your plumbing fresh and free-flowing.
Commando Liquid: The Game Changer that Restores Sensor Function
Say goodbye to stubborn buildup and false sensor readings with Commando Liquid. This concentrated cleaner works in as little as 12 hours to restore your black tank to like-new condition.
- Features:
- Supercharged enzyme formula for deep cleaning.
- Restores sensor function and lubricates valves.
- Easy-to-use liquid that’s perfect for periodic maintenance.
Make Commando Liquid a part of your tank care routine and ensure smooth RVing all year long.
Why Choose Walex’s Liquid Formulas?
Walex’s new liquid formulas offer precision dosing and premium performance. Whether you’re a weekend warrior or a full-time RVer, these products are engineered to make your adventures stress-free and environmentally responsible.
Start your 2025 travels with Walex’s new liquid solutions. Your RV deserves the best care, and Walex delivers it with innovative, high-performance formulas that cater to every need.
Happy Adventuring!
How do I clean and maintain my RV black tank sensors to get them working again?
RVing offers unparalleled freedom and adventure, but maintaining an RV's black holding tank and keeping it clean and functioning can be a hassle, especially when the sensors start giving incorrect readings. One of the most common black tank issues is black tank sensors that fail to read correctly due to buildup. This causes inconvenience and can lead to improper maintenance of the tank itself.
Why won't my RV black tank sensors read correctly?
RV black tank sensor issues are often due to waste and tissue residues that adhere to the tank walls and sensors. Over time, this buildup can cause sensors to register the tank as partially full, even when it's empty, leading to what many in the RV community might call the "phantom full tank" effect.
How do I clean my black tank sensors?
Cleaning RV black tank sensors is not just about dumping and rinsing the tank. It involves using a product that can effectively break down the waste and residue clinging to the sensors and tank walls. Commando Black Holding Tank Cleaner is designed specifically for this task, offering a solution to the common problem of malfunctioning RV tank sensors.
The best RV black tank cleaner to quickly and easily fix RV black tank sensors
Follow the following steps to quickly and easily clean your RV's black tank sensors using a premium black tank sensor cleaner.
- Empty the tank: Start by emptying your black tank completely.
- Add Commando: Through the toilet, add one Commando packet to your black tank. The outer lining is designed to dissolve quickly in water, releasing natural digestive enzymes that target and liquefy waste and paper, removing any residue caked on the tank walls and sensors.
- Fill and Soak: Fill the tank with water just above the sensor level to ensure all sensors are submerged. Let the solution sit for 12-24 hours, allowing the enzymes in Commando to break down the waste and paper.
- Final Rinse and Inspection: After the soak period, empty the tank again and give it another rinse. Check your sensor readings to ensure they now reflect an empty tank accurately.
How to prevent future sensor issues
To prevent future issues with RV black tank sensors:
- Regular Maintenance: Use Commando every few months as part of your regular maintenance routine.
- Proper Usage: Avoid using harsh chemicals that can damage tank sensors and seals. Opt for safe, well-formulated cleaners and deodorizers like Commando, Porta-Pak and Bio-Pak.
- Monitor and Adjust: Keep an eye on your sensor readings and perform cleaning routines before sensors start to show incorrect readings.
Maintaining the functionality of your RV black tank sensors is crucial for hassle-free adventures. By using Commando Black Holding Tank Cleaner, you can ensure that your RV's black tank remains clean, and the sensors operate correctly, letting you focus on enjoying your travels rather than dealing with maintenance woes.
Happy Adventuring!
Walex RV Introduces Six New Premium Cleaning Products
Walex is thrilled to launch six new premium cleaning products for the RV/Marine market. The cleaning line complements Walex's popular holding tank deodorizers so RVers can easily keep their rigs fresh and clean—inside and out.
Walex Products Company's dedication to innovation and quality is evident in each premium cleaning product. Products manufactured using eco-friendly and biodegradable ingredients, these cleaners are both practical and environmentally conscious, aligning with the company's commitment to sustainability.
"We are excited to introduce these new cleaning solutions to the RV and marine communities," said Walex's RV/Marine Sales Manager Tony Butler. "Our Ph.D. chemists and production team worked tirelessly to develop cleaning products that work safely and effectively alongside our best-selling holding tank treatments. With these new offerings, we aim to enhance the RVing experience, ensuring comfortable and clean travels, no matter how long the trip."
The newly unveiled range includes Rubber Roof Cleaner & Conditioner, Mold & Mildew Remover, Black Streak Remover, Awning Cleaner, Toilet Bowl Cleaner, and Kitchen & Bath Cleaner.
How to Keep RV Black Tank Sensors Working Properly
How to Keep RV Black Tank Sensors Working Properly
Quick Answer: To maintain accurate RV black tank sensors, monitor tank levels, use quality tank treatments, flush regularly, deep clean when needed, and avoid flushing non-biodegradable items.
Why Black Tank Sensors Matter
Your RV’s black tank sensors tell you when it’s time to dump. If they malfunction, you may empty too soon—or worse, too late—leading to odors, buildup, or hardened waste. Proper maintenance keeps your tank system working smoothly and prevents unpleasant surprises.
1. Monitor Tank Levels Properly
Most modern RVs include sensor panels that indicate tank levels. For best performance, wait until your tank reaches about two-thirds full before dumping. This allows enough liquid volume to help flush solids out efficiently and reduces the risk of pyramid buildup.
2. Use Quality Tank Treatments
Regular use of a premium tank treatment helps break down waste and control odors while minimizing residue on tank walls and sensors.
- Bio-Pak – An enzyme-based formula that digests waste and toilet paper while controlling odor at the source.
- Porta-Pak – A performance-driven formula designed for strong odor control, especially in heavy-use or hot conditions.
Using the right treatment reduces buildup that can interfere with sensor accuracy.
3. Flush the Tank Regularly
After dumping, rinse your black tank thoroughly. If your RV has a built-in flush system, use it. Otherwise, a tank-flushing wand can help remove residual waste from tank walls.
Always dump the black tank first, followed by the grey tank. Grey water helps rinse remaining residue from the sewer hose.
4. Deep Clean Sensors When Needed
If sensors begin reading inaccurately, buildup is likely coating the probes.
To restore performance, use a deep-clean treatment such as Commando.
How to Clean Black Tank Sensors
- Empty and rinse the tank.
- Add one packet and fill the tank above sensor level.
- Let sit for 12–24 hours (longer if needed).
- Dump and rinse again.
This enzyme formula liquefies hardened waste and paper, cleans tank walls, and helps restore accurate sensor readings. For preventative maintenance, use every three months.
5. Practice Good Waste Habits
Avoid flushing non-biodegradable items such as:
- Paper towels
- Baby wipes
- Feminine hygiene products
- Sanitary wipes
These materials can cause clogs and interfere with proper waste breakdown.
Bottom Line
Maintaining accurate black tank sensors requires consistent monitoring, proper water usage, quality treatments, and periodic deep cleaning. With reliable sensor readings, you’ll know exactly when to dump—keeping your RV clean, comfortable, and odor-free.
Happy Adventuring!
RVIA awards Walex 2023 Supplier of the Year
The RV Industry Association (RVIA) has named Walex Products Company its 2023 Supplier of the Year.
RVIA presented the Supplier of the Year accolade at the 2023 RV Aftermarket Conference Awards in San Diego, which recognizes the most outstanding Supplier in the aftermarket segment and is voted on by all Distributor members.
Walex introduced its line of premium RV deodorizers and cleaners after decades of success manufacturing odor-control products for the portable sanitation industry. Walex RV products are in premium RV dealerships worldwide, and the Walex RV division is continuously creating and launching new products to ensure that no matter how long the adventure, RVers stay comfortable, clean, and odor-free.
Walex RV Sales Manager Tony Butler attributed his division's success to the hard work of the company's employees. The Walex team manages every manufacturing process step, from product creation to shipping.
"Our dedicated staff works hard every day to make sure products meet our customers' expectations for quality and delivery time," Butler said. "As a family-run business, we employ a tight-knit team who work very hard; this award is a testament to their dedication to manufacturing industry-leading, premium sanitation products."
How to Maintain Your RV Grey Holding Tank
How to Maintain Your RV Grey Holding Tank
Quick Answer: To maintain your RV grey tank, use a treatment designed for grease and soap buildup, avoid putting solids down the drain, dump regularly, rinse after emptying, and monitor tank levels.
Why Grey Tank Maintenance Matters
Your RV’s grey holding tank collects water from sinks and showers. While it may seem less problematic than the black tank, grey water contains grease, soap scum, food particles, and organic residue that can create odors and clogs over time.
Routine maintenance keeps your plumbing system flowing properly and prevents unpleasant smells inside your RV.
1. Use a Grey Tank-Specific Treatment
Not all tank treatments are formulated for grey water systems. Choose a product designed specifically to break down grease and organic sludge.
Elemonate is formulated to dissolve grease, food particles, and soap buildup while helping control odors. The quick-dissolving tablet releases enzymes and leaves behind a light lemon fragrance.
How to use:
- Drop one tablet into the sink drain.
- Run water for several seconds to dissolve it.
- Allow the enzymes to work inside the tank.
2. Avoid Putting Problem Items Down the Drain
While some residue is unavoidable, limiting certain materials helps prevent buildup.
Avoid sending the following into your grey tank:
- Cooking grease or oil
- Food scraps
- Coffee grounds
- Paper towels
These materials can accumulate quickly and restrict tank flow.
3. Dump the Grey Tank Regularly
Frequent dumping helps prevent bacterial growth and odor formation.
- Regular use: Dump every 3–4 days
- Light use: Dump as needed based on tank level
When servicing both tanks, always dump the black tank first, followed by the grey tank. The grey water helps rinse residual waste from the sewer hose.
4. Rinse After Dumping
After emptying the tank, rinse it thoroughly. You can:
- Refill partially with clean water and dump again
- Use a tank cleaning wand for deeper rinsing
This helps remove lingering residue from tank walls.
5. Monitor Tank Levels
Keep an eye on your tank monitor panel. Dumping before the tank reaches full capacity prevents backups and overflow issues.
Grey Tank Maintenance Checklist
- Use a grey tank-specific enzyme treatment
- Avoid grease and solids
- Dump regularly
- Rinse after emptying
- Monitor tank levels
Bottom Line
Consistent grey tank maintenance prevents odors, protects plumbing components, and keeps your RV experience clean and comfortable.
Commando Wins Award for Sustainable Packaging
The Flexible Packaging Association awarded Commando Black Tank Cleaner a Silver Achievement Award in Sustainability during the 2023 Flexible Packaging Achievement Awards Competition.
In 2022, Walex worked with packaging supplier Glenroy, Inc. to transition Commando into a recycle-ready zipper pouch.
RVers can recycle Commando in plastic bag recycling bins, located at many retail stores. The material from the pouches is then made into synthetic lumber for decking, park benches, or recycled directly into another pouch. Walex is in the process of transitioning the rest of its RV/Marine product line to recycle-ready packaging.
Premium black tank products now available in fresh summer fragrances!
Walex added two new fragrances to its RV product line January 2023.
Porta-Pak Black Tank Deodorizer will be available in Clean Linen, and Bio-Pak Black Tank Deodorizer & Digester will be available in Ocean Mist.
Walex research & development created these fragrances after extensive testing to determine the most appealing, best-performing fragrances. These fresh, beachy scents are perfect for summer travels.
How to De-Winterize Your RV Tanks for Spring
How to De-Winterize Your RV Tanks for Spring
Quick Answer: When de-winterizing your RV, deep-clean both the black and grey holding tanks using enzyme-based treatments. This removes residual buildup, eliminates odors, restores sensor accuracy, and prepares your system for summer travel.
Why Spring Tank Cleaning Is Important
After months in storage, waste residue, grease, and odor-causing buildup can remain inside your holding tanks. If not properly cleaned, this buildup can cause:
- Persistent odors
- False sensor readings
- Slow drainage
- Valve and seal issues
- Clogs from hardened waste
A spring deep clean ensures your RV is road-ready and odor-free.
How to Clean Your RV Black Tank After Winter Storage
For black tank cleaning, use a concentrated enzyme treatment such as Commando.
Why Enzyme Cleaning Works
Enzymes break down organic waste and toilet paper stuck to tank walls and sensors. This residual buildup is a common source of foul odors and inaccurate level readings.
How to Use a Black Tank Cleaner
- Empty and rinse the tank.
- Drop one pre-measured packet into the toilet.
- Fill the tank above sensor level.
- Let sit for 12–24 hours (longer for stubborn buildup).
- Dump and rinse.
In many cases, this restores sensor function without scrubbing or agitation. For preventative maintenance, repeat every three months.
How to Clean Your RV Grey Tank After Storage
Your grey tank collects water from sinks and showers, which leads to grease, soap residue, and organic sludge buildup over time.
Elemonate is designed specifically for grey tank sanitation and drain line maintenance.
How to Use a Grey Tank Treatment
- Drop one tablet into a sink drain.
- Run water briefly to dissolve.
- Allow time for enzymes to break down grease and sludge.
- Empty the tank fully.
Regular use helps keep drain lines free-flowing and odor-free.
Spring RV Tank Maintenance Checklist
- Deep-clean black tank
- Restore sensor accuracy
- Clean grey tank and drain lines
- Lubricate valves and seals
- Eliminate residual odors before travel
Bottom Line
De-winterizing isn’t just about refilling water lines—it’s about starting the season with clean, properly functioning holding tanks. Using enzyme-based treatments simplifies the process and helps prevent odor and performance issues during peak travel months.
Happy Adventuring!