Pet Safe Scoop Free Ultra Self Cleaning Litter Tray Replacement Litter Trays are disposable litter trays with leak-proof lining for easy cleanup. The crystal litter absorbs urine for 5x better odour control than other litter & uses 5-10x less litter than clay & clumping litter. Usage For best results, replace the litter tray every 20
- 30 days for one cat, every 10
- 15 days for 2 cats, or every 7
- 10 days for 3 cats. You might need to replace the litter tray more often if you have senior cats, kittens, or cats who eat a diet high in crude fibre, ash, & by-products. This product is only suitable for use with the Pet Safe Scoop Free Ultra Self Cleaning Cat Litter Box.