I was dumb enough to store a huge sack of birdseed in my shed over the long Canadian winter two years back. The mice had a fucking smorgasbord. That shed was absolutely trashed with seed, nesting debris, grass clippings, shit and piss by the time I opened her up in the spring. I had to gut everything out of it, rigorously clean it with PPE, and disinfect it multiple times over. I do like mice though, so I’m not all that upset that it happened.