Zero Odor Litter Box Odor Eliminator, Trigger Spray, 16 ounces Permanently Eliminate Soiled Litter Box odors. Designed to use with clay and clumping litter Zero Odor Does not Mask or Cover Up Odors with Fragrances or Perfumes It Permanently Eliminates All Existing Odor. And Freshens to Prevent Odor Build up Spray Litter Box to permanently Eliminate the smell of Cat Urine and Feces Made in the USA. It is Non-toxic, Non-allergenic, Biodegradable. Safe around pets