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.
Outdoor trash bins with flaps are better at keeping the waste contained, even controlling smells to a certain degree. However, these receptacles are also more prone to getting broken or needing to be cleaned, since the flap comes into constant contact with the waste.