Walex Commando™ Black Holding Tank Cleaner, 4/Pk

Experiencing false readings from your sensors, or a continuous odor from your black holding tank? If so, you most likely have residual waste buildup on your holding tank interior walls and level sensors. Using Commando™ Black Holding Tank Cleaner will remove the odors and sensor buildup in 12 to 24 hours. The super-concentrated formula is filled with natural enzymes to penetrate the walls and sensors to break down waste and paper buildup in your black holding tank. Use every 3 months to help keep your tank in good working condition.