There are a few ways to go about hiding your outdoor garbage. One option is to build a small enclosure around your trash cans. This can be done with wood or other materials and can be as simple or complex as you want. Another option is to purchase a pre-made storage shed specifically for garbage cans. These are typically made out of plastic or metal and have a lid to keep the contents out of sight. If you have extra space in your backyard, you could also consider burying your trash cans underground. This will require some excavation but will completely hide your garbage from view.