Features: Insulate: To help block the smell and confusion. Durable: each refill takes up to 8 weeks per cat. It is easy to use with one hand and has a large capacity. The cassette works with the cat litter disposal systemEasy to assemble, just pull out a bit of foil, push it through the middle of the cartridge and tie a knot at the bottom. Then open the lid and funnel of the bucket, place the cartridge on it and press the refill completely. Easy installation can save you a lot of time. Lasts up to 8 weeks for a cat. Save your money, especially for cat lovers. The refills use the best material, and each refill consists of 7 layers of film. Our refills are compatible with most standard nappy eaters: Litter Genie XL LitterLocker Fashion LitterLocker LitterLocker II LitterLocker Design. 9 pack litter refill bags (Attention: you must have an empty original diaper cartridge to use these refills).