Haha! The squirrel must have been so excited to find edible thing's growing on building edges! I think we get so many critters because we're the only ones growing much edible in our garden.

I read something on someone dealing with fungus gnats a while ago, but I'm struggling to remember what he did. I get the feeling it was adding something like diatomaceous earth. Anyway, it's interesting to hear a new trick of keeping the dampness below the surface layer.