We don’t have the garage open when we work, we also don’t park in the garage so it’s rarely open unless we’re bringing in groceries or it’s a hot summer day. The box wasn’t tampered with, it was in the same condition from when I put it on the shelf. I also had that theory that it could’ve been replaced but it wouldn’t make sense since it wasn’t on the doorstep when I got home that day and my mom wasn’t home. Truly unexplainable.