That's an excellent question! A smelly or grimy outdoor bin is a real nuisance. Based on my own experience and research, the key is to look for specific materials and features.
For ultimate ease of cleaning and odor resistance, I highly recommend a stainless steel trash can. The non-porous surface doesn't absorb smells, and you can simply wipe it down or hose it off. Powder-coated steel is another great, durable option. For plastic bins, ensure they are made from thick, high-density polyethylene and have a tight-fitting, locking lid to contain odors and pests. Smooth interiors without ridges are much easier to rinse out.
My top tip is to always use a heavy-duty liner and sprinkle a bit of baking soda at the bottom of the bag to neutralize odors. Placing the can in a shaded spot also helps. A model with a removable inner bucket is a game-changer for quick cleaning. With the right bin and simple habits, you can keep your outdoor space clean and fresh.