There are a few benefits to keeping your trash can in the garage:
It keeps your lawn looking tidy since your trash can is out of sight.
It deters rodents getting into your trash.
It stops neighbors from using your trash can.
There are also some reasons you may not want to keep the trash can in there:
If it’s very smelly, you might still attract critters that will then look for ways inside your house.
If the trash can is really smelly, the smell can travel inside the house.
Your garage will smell bad, especially in the high heat.
Therefore, it’s up to you whether you choose to keep your trash can in the garage.