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Introducing COMMANDO Black Holding Tank Cleaner by Walex. The advanced super-concentrated enzyme formula is designed to fight back against the tough residual buildup, false sensor readings and unpleasant odors which are a common problem within RV black holding tanks.
Commando Black Tank Cleaner penetrates deep into tank walls and sensors to clean and remove lingering odor, waste and paper buildup. This advanced formula cleans your entire tank in 12-24 hours! Recommended usage is 1 packet every 3 months to maintain a clean tank, or use more or less frequently as needed. One bag contains 4 'drop-ins'.
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