littermaid odor absorbing litter box carbon filters, 12 pack(premium pack) littermaid for over a decade littermaid has been a leader in providing practical litter box solutions, so you and your cat can have the freshest, cleanest environment possible with the least amount of hassle. littermaid is constantly striving to provide cats with the best place to do their business. the littermaid carbon filters make the perfect partner for all of your littermaid automatic self cleaning litter boxes. littermaid carbon filter refills further reduce litter odors and come individually wrapped for preservation and maximum odor absorbency of nearly 50 percent. an easy adhesive application to the waste receptacle lids means the filters can be replaced whenever desired. in a convenient 12 pack the littermaid carbon filters will keep your litter box odor needs covered for months. littermaid’s goal is to provide practical innovations in the litter box and accessories category that not only keep your home clean and fresh but maintain the health and happiness of both you and your cat.