Meowee! Clean & Kind Cat Litter Tray Liners 6 Pk. Compostable*. Meowee Clean & Kind Compostable Litter Tray Liners are a great way to clean up cat litter without mess. Made from biodegradable and compostable material, they can be disposed of in a bin with other household waste. *The material they are made from is strong & plant based. Cat litter & biodegradable litter tray liners should not be composted at home as cat faeces may contain bacteria. When sent to landfill with other household waste, these liners will breakdown in the same way as other compostable bags & unlike plastic liners they will not create micro plastics as they degrade.