Probably squirrels! I have a lot here, sure hope they don’t do it here. If I were you, I would almost plan me a hunting trip in the yard....LOL! Those little boogers climb right up my brick house!
A couple of weeks ago I came in from Lowe’s and laid a bag of birdseed on the glider. Carried everything in the house and forgot to pick up the birdseed. Next morning, the corner was chewed off, seed all over glider and floor....what a mess I had and I don’t have to tell you how much birdseed costs! If I would have had my gun. Big talk from me, I couldn’t shoot one. LOL!