MrGreen PVH is an all natural organic micronutrient-based odor eliminator and wastewater treatment solution for pits, vaults and holding tanks. PVH is a concentrated formula that goes to work immediately to enhance and accelerate existing bacteria present in wastewater. The result is a rapid breakdown of accumulated organic solids and greases along with remarkably reduced odor. MrGreen does not contain bacteria, enzymes, harsh chemicals, alcohol or masking agents and as such is safe for humans, animals and the environment.