Dog Door. Could lock the cabinet when not home and dog could still come and go. This could also work as a door into a cabinet in the garage to be a cat box where the box isn't in the house and the cat can't get out. But it is easy to get to for cleaning.
Dogs have a way of finding the people who need them, and filling an emptiness we didn’t ever know we had. -Thom Jones https://www.thedodo.com/?utm_content=bufferc25ab&utm_medium=social&utm_source=pinterest.com&utm_campaign=buffer