Water-soluble concentrated formula contains high levels of fragrance, surfactant and bacteria for 24-hour odor control. Billions of select spore-form bacteria completely eliminate odors at their source by digesting odor-causing molecules. Can be used in trigger sprayers, mop water, carpet extractors and drains. Biodegradable surfactant. Low VOC (per CARB and OTC). Gallon bottle. 4 bottles per case.