13 Fishing All Seasons Sports, Inc Good Pet Stuff, The Original Hidden Litter Box Base Kit, Round Enclosed Cat Litter Box Planter with Artificial Plants, Vented Carbon Odor Filter 4X Treble Hooks 1# 10 0# Full Size Fishhook Super Sharp High Strength Carbon Steel Angle Anchor Barbed Pesca Large Fishing Hook AliExpress 18 Size of the litter box matters more than most people think. A litter box that's too small can affect how your cat moves, digs, and even whether they use it at all.