STINK FREE Litter Spray Powder Deodorizer and Air Freshener for Litter and Litter Boxes is a patented formula that INSTANTLY eliminates dirty litter odor (including cat urine odor), prevents scoopable litters from sticking to the box and stops litter box contamination. Spray STINK FREE LITTER on top of dirty, stinky litter and stop the odor INSTANTLY. It forms a safe nontoxic blanket of true deodorizer protection that attracts, encapsulates and destroys odor. LITTER BOX: Spray STINK FREE LITTER on cat litter box to prevent sticking and contamination. It sprays on in liquid form and fills in the microscopic pores in the plastic where urine and waste odor hide and grow. It then flash dries to create a solid physical and chemical barrier that stops this odor contamination and prevents scoopable litters from sticking to the box. Shake Well Before Using to Mix Powder. Litter Application: Hold STINK FREE LITTER approximately 8 inches away from litter and generously coat the entire surface. Reapply whenever necessary. Safe to use as often as you like. Litter Box Application: Hold STINK FREE LITTER approximately 8" away from litter box and coat the entire bottom of the box. Allow about 30 seconds to dry, then add litter. When changing litter, spot apply STINK FREE LITTER to any areas scraped clean from use. Completely reapply whenever you wash your litter box. GUARANTEED to outperform all other litter box deodorizers or your money back.