Forget the cameras. These things really work.

https://www.amazon.com/UANAX-Ultrasonic-Deterrent-Anti-Bark-Ultrasound/dp/B08L33D4TW/ref=zg_bs_3024231011_6/137-6466039-4583905?_encoding=UTF8&psc=1&refRID=0SKPZRNQGQMK0C85VZH5

I sent up one in my appointment hallway, and it worked within about two nights.

Then I screwed it to the wall to looks like a fire alarm sensor or something, right across from their apartment.

Now the dog doesn’t even bark in there apartments.

Win!