The CSI Urine Cleaning Spray is a powerful and highly effective tool for cleaning litter boxes and enclosed cat toilets. Specially formulated with bioactive enzymes, it attacks urine at the molecular level and smoothly removes dirt, stains, feces and bad odors.When the spray is applied to the litter box, bacteria immediately start producing enzymes on the spot. The enzymes break down urine and remove stains and odors. The bacteria then continue to produce enzymes as long as nutrients are available, such as the components of urine.Facts about Cat litter box cleaning spray:Bioactive enzymes that attack urine at the molecular level. Reduces dirt, vomit, stains and feces.Eliminates odors.Safe to use in pet environments. 500 ml.