The PetSafe ScoopFree Self-Cleaning Cat Litter Box Privacy Hood is a great way to help contain the odor from your cat’s waste. The hood is made of a durable, flexible plastic that is easy to clean and is designed to fit most standard litter boxes. The hood features a color-coded seal to help you keep track of which side of the box is used. The hood also includes a removable filter that can be washed and re-washed without worrying about running out of powder.