Compatible with iTouchless small Trash Cans 2.5 Gal, 3 Gal, 4 Gal and other Sensor Trash Cans and Step Pedal Trash Cans under 8 Gal with Odor Filter Compartment Activated Charcoal Absorbs and neutralizes smelly trash odors- Keeps your kitchen smelling fresh and clean 3"(w)x3"(L); Made by Natural Activated Carbon- environment-friendly and highly efficient Each filter provides up to 3 months of odor stopping power. Also work other odorly environment like Shoe Cabinets, Closets, Refrigerators, Diaper pails, Gym Bags and so on. Compatible with iTouchless small Trash Cans under 8 Gal with Odor Filter Compartment Absorbs and neutralizes smelly trash odors- Keeps your kitchen smelling fresh and clean Made by Natural Activated Carbon- environment-friendly and highly efficient 4 Pack – Each filter provides up to 3 months of odor stopping power. Also work other odorly environment like Shoe Cabinets, Closets, Refrigerators, Diaper pails, Gym Bags and so on.