Are you experiencing false readings from your sensors, or a continuous odor from your black holding tank? If so, you most likely have residual waste build-up on your holding tank interior walls and level sensors. Use Walex Commando Black Holding Tank Cleaner to remove the odors and sensor build-up in 12 to 24 hours. The super-concentrated, scientifically developed formula is filled with natural enzymes to penetrate the walls and sensors to break down waste and paper build-up. Continued use of Commando every three months will keep your tank in good working condition.
Directions for Use: Empty black holding tank and close valve. Add one Commando packet 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 build-up off the 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 build-up, but extreme cases may require letting the tank sit for 24 hours. One Commando packet will treat a holding tank capacity up to 50 gallons.