Refresh rooms and areas with the Purr-Feect Clip Litter Box Deoderizer where cat litter boxes are placed. This 100% recyclable deodorizing clip fits on the outside of all litters box pans for a Purr-fect fit! Will deodorize for 30 plus days without interrupting good litter box behavior. Made from recycled blends of different plastics. Compared to most gel and aerosols, they are manufactured with 50% less energy and final packaging requires little cube saving resources.