If you have a cat, you probably already know how clean these animals are. In addition to spending a large part of the day cleaning themselves, their dog proof cat litter box is the only place where they relieve themselves unless they feel upset about something. Many times his litter box gives off bad odors. This can be due to several factors. Beyond that, you may be used to the smell, for your guests it can be annoying, so we give you the best tricks against the bad smell of the sandbox.