Everyone seems to have problems with cats, my problem is seagulls. They nest on the roof between our house and next door's (on one side) and our neighbour on the other side of us is feeding them.
They have on occasion knocked on our back door but when it gets something thrown at the door it flies off, not so this year, it won't move away until we open the door and chase it away. They have also started landing on our flat roof, outside our bedroom, and squawking from 4.30am😡