Walex Commando Liquid Treatment 946ml
Deep Clean Your Tank & Restore Sensor Accuracy—Fast
When your black tank sensors stop reading correctly or you’re dealing with lingering odors, it’s time to call in Commando®. This super-concentrated, enzyme-powered cleaner is formulated to tackle the toughest buildup on tank walls and sensors—no scrubbing required.
Just add one dissolvable packet or one dose of liquid into your RV toilet, fill the tank with water, and let it sit. In as little as 12 to 24 hours, Commando® breaks down residual waste and paper, restores sensor function, and leaves your tank clean, lubricated, and ready for your next adventure.
- Restores black tank sensor accuracy: Breaks down residue buildup on sensors to fix false readings like “2/3 full” issues.
- Super-concentrated enzyme formula: Digests tough waste and toilet paper buildup without harsh chemicals.
- No scrubbing or agitation needed: Just drop it in and let it go to work—perfect for hassle-free maintenance
- Cleans tank walls, lubricates valves and seals: Maintains the entire system, preventing long-term issues like clogs and stuck valves.
- Formaldehyde-free, biocide-free, and septic-safe: California compliant and safe for all black holding tank systems.
- Available in convenient dissolvable packets and versatile liquid: Choose the ease of a pre-portioned packet or the flexibility of a liquid formula.
INSTRUCTIONS FOR USE
- Empty black holding tank and close valve.
- Add 4oz of Commando liquid into the empty tank and fill the holding tank full of water.
- The water level needs to cover all sensors to allow Commando to penetrate and clean any buildup off he walls and sensors.
- Let product sit in tank for 12 to 24 hours.
- Driving the vehicle to agitate can help speed up the process, but is not required.
- 12 hours is sufficient to break down most waste and paper buildup, but extreme cases may require letting the tank sit for 24 hours.
- One 4oz dose of Commando liquid will treat a holding tank capacity up to 50 gallons.
We aim to have your parcel delivered as soon as possible. Sometimes, unavoidable delays can occur. If you have not received your order in the time frame provided, please get in touch with us at online@carac.com.au.
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Standard Size Shipping
- $11 Flat Rate - all states except WA (2-5 business days)
- $17 Express Rate - all states except WA (1-3 business days)
- $16 Flat Rate - shipping to WA (3-8 business days)
- $22 Express Rate - shipping to WA (2-5 business days)
Oversized Shipping
Some items are heavy and bulky, and for those oversized items with known shipping charges, we will display these rates in the checkout.
Other oversized items don't have a fixed shipping rate, so we'll provide you with a quote on the best rates and method to your location after we check with our range of specialist shipping partners.
Please read our Shipping Policy page for further details.
Returns
In order to make a return the following points must be met.
- Proof of purchase must be provided.
- Item/s must be in original and unused condition.
- All packaging must still be in original condition.
- Refunds will be issued to the original method of payment and may take several working days to show in your account.
- We will notify you when the refund has been made so that you can track funds.
- Any postage charges incurred in the original transaction will not be refunded, unless we have incorrectly supplied an item.
Online purchases
If you are not happy with your online purchase, you can return it within 30 days of the original order date. To be eligible for return, the terms as outlined above must be met.
To organise a online or in store return, please follow the steps on our Refunds & Returns page.