Nearly everyday at least one ball gets thrown over the fence. The record was 5 in one day! I used to pick them up each time and throw them back but I am getting annoyed by it. If the kids are in the garden when I throw them back they never say thanks.
I had plans to get a greenhouse before they moved in but it's not worth even considering.
A few days ago I gave up throwing them back. I counted 4 balls in my garden this morning (plus one more that my dog was chewing on.)
Neither the kids or the parents have said anything yet. AIBU?