The cat-box that the litter is poured into can give off a strong odor, if not disposed of properly. It is recommended that the litter box be kept in low traffic areas of the home, such as a basement or laundry room to avoid litter box aversion. There are commercially available special types of litter to help cover or lessen the odor produced. They contain baking soda, plant extracts and/or odorized crystals. If kept in a room with an intake vent, an air freshener may be added on the furnace filter to isolate the odor from the rest of the house.