Modkat Top-Entry Litter Box vs IRIS USA Top Entry Cat Litter Pan

Buy the Modkat if you want a fully enclosed top-entry box with a swivel lid, a reusable liner and an odor filter, and your cat is under about 12 lbs. Buy the IRIS USA Top Entry Pan if you want a simple, roomy open-top box with a built-in lid mat and no liner to replace. The Modkat has the better build and the stronger owner record (4.7 from 2,295 ratings versus 4.5 from 368), but its 9.5-inch opening and 15-inch height suit small to average cats, not long ones. The IRIS is longer inside and easier to scoop, though it offers less odor control and less containment.

• Choose the Modkat if you want a covered top-entry box that hides waste, cuts tracking, holds an odor filter and keeps most dogs out.
• Choose the IRIS USA Top Entry Pan if you want a larger, simpler box with a grooved lid mat and no liners to buy.