If your kitten or cat uses the bathroom outside the litter box, you can try a few techniques to help your cat make the switch. However, the reason your cat isn't using the litter box may be a medical issue rather than a behavioral one. If you think it's a behavioral problem, try one of the following tactics: Litter box problems: Your cat may not like the type of litter box you got for it. The cat might not like the placement of the litter box either. Find out whether the litter box is clean enough; cats generally prefer clean areas. Competitive cats: If you have multiple cats in your household, your cat could be trying to assert its dominance over the area. Or perhaps your cat has claimed dominance over the litter box, and the cat using the floor is blocked from using the litter box.