If you're having trouble with a smelly trash can, the best solution is to empty it regularly and clean the inside at least once every couple of weeks. Also, consider what you’re putting in the can: Highly perishable items such as meat scraps and wrappers will begin to smell at a much quicker pace than the rest of the trash, so if it’s convenient, you might want to place those items directly into your curbside trash cans or dumpster. You can also buy stainless steel trash cans with special filters in the lid to help neutralize odors. Tightly fitting lids also help stop smells from escaping.