RV Holding Tank Treatment Liquid - LavenderSewage odors from toilets and holding tanks make for an unpleasant RV and Camper experience. Waste builds up inside the black tank clogging sensors and slowing down pump outs. EcoStrongs RV Holding Tank Treatment liquifies black tank solids eliminating sewage odors in the process. It uses billions of enzyme producing bacteria to break down and eat waste, fats, oils and greases, and toilet paper eliminating foul smells at the source. At the same time,