Garbage cans can collect some rather nasty odors over time. They can get bad enough to make your garage or house smell. A simple trick to keep them from getting those odors is to sprinkle about 1/2 cup to 1 cup borax on to the bottom of the can. This will keep smelly bacteria and mold from growing in the trash can. If you can is already smelly take it outside put 1 cup of Simple Green cleaner and fill with the garden hose. Let the can warm for a few hours in the sun and then rinse well. Let the sun dry it out leaving you with a fresh trash can.