Even an “indoor” cat can make it difficult to keep the home clean and odor-free. The litter box can become a major source of dirt and odors if you aren’t careful. Make sure that you place your litter box in a place you can access frequently to keep it clean, says IHeartCats. Pick a litter that suits your cleaning style, and make spot-cleaning stray litter and near-misses easy by having a handheld vacuum, broom and paper towels nearby. Mats and plastic liners and can keep the dirty litter confined, the site adds.