The M-Pets ALEXANDRIA Cat Litter Tray consists of 2 removable litter trays, one sieve, and one rim. This 4 piece litter try allows for quick and easy hygienic cleaning. By removing the outer rim, you can lift up the sieve, sifting the waste from the litter. Waste can be tossed straight from the sieve into disposal bin, without the use of a scoop. The double tray system allows you to interchange the litter trays for cleaning, and makes for easier removal of litter. The tray and rim are connected with Easy Click clasps.