Fresh Step is a brand committed to making the world a more welcoming place for our feline friends and their owners. With clever design and innovation that could only come from the experts in cat care, kitty cleanup just got easier! Fresh Step Litter Box Scent Crystals are a convenient and clean way to maintain your kitty litter box. Freshen up your litter box with scent-boosting crystals that mix in with your litter and release a light fragrance every time your cat uses the litter box. These non-toxic fragrances are completely pet friendly, and once they are sprinkled into your litter, they will release a light fragrance every time your cat uses the litter box. Over time, as the water-soluble crystals break down, they leave no residue. Instructions: Fill cap with crystals. Sprinkle evenly over litter. Use more for larger boxes, less for smaller boxes. Be sure to replace cap tightly after use. Crystals are water-soluble, so they will break down over time. Use every time you scoop for a refreshing scent.