Lemon or Lime Peels: Just put some lemon or lime peels into an uncovered container and leave them inside the confined area for a couple of days. The citrus smell will naturally replace the bad trash can smell.
Plastic trash cans are easy to clean and keep odor free, with grocery bags helping to lower trash liner expenses, all this adds up to make this type of trash container one of the more popular ones. By emptying the bag daily, there is no chance of an odor building up. A useful tip is to make sure the trash liner fits the can and is not so small that the bag slides down, allowing food and odor to accumulate throughout the day. Also, hose the trash can down outside on a daily basis if it needs it, while using a sponge with dishwater liquid to clean the stains that remain.