Hi Guru, welcome back. Nice to see you again

I'm sorry your upstairs neighbour is treating you so awfully. I hope you can move soon. Is there a chance to move out of the section 8 housing? I used to live in a place like that and it was NOT GOOD. Not good at all.

I don't know if this will get you in trouble or not, but I used to have a squirrel problem at an old place of mine and I would spray them with a water gun whenever they came on my patio or windowsill. You have to sit there for quite a bit, several times a day . . . in a few weeks, they'll "learn" that your deck is NOT a place they want to be. Then you only have to keep watch for a few minutes each day. But if you live in a place where they monitor you, then it might not be the best behaviour? Not sure.