Never had issues with neighbours before but 2 weeks ago they nailed plant baskets onto the fence that backs onto my garden, the nail/screws are sticking out by an inch into my garden. I went round 2 weeks ago when I noticed them and explained that they were sticking out and that I was worried about ds hurting himself on them, they apologised and said they'd take them down. Thought no more of it till today (presumed they'd been took down), ds scratched his arm on one! Would it be unreasonable to take a hammer to the screws and if they fall down, well they should have dealt with it?