Getting a little annoyed

With my neighbours kid. He shoots pucks in his front yard which is like fine good for you dude/ but he never picks them up from my yard afterwards, again annoying but I’ll live but recently they have been getting progressively closer to my house and windows and I just found a couple in my actual back yard which has like a 7 foot fence. Should I yell at him or just start collecting and keeping the pucks that end up in my yard