Got a closet that doesn’t smell as fresh as you’d like? First, remove the contents, then wash down the walls, ceiling, and floor with a cloth dampened in a solution of 1 cup each of vinegar and ammonia and 1/4 cup baking soda in 1 gallon (3.7 liters) water. Keep the closet door open and let the interior dry before replacing your clothes and other stuff. If the smell persists, place a small pan of cat litter inside. Replenish every few days until the odor is gone.