You can call Animal Control and complain. They bring in Fleas, Ticks, sh*t all over.
THEY should be the ones that are going to trap them.
Also make sure you tell the neighbor the issue... write an anonymous note saying there is Rat/mouse poison around and they are bringing in these cats to DIE ! No you do not put poison out, but the treat is enough to do it.
I did that with one neighbor and said it is under my deck and your cat is going under there. It kinda worked
THEY should be the ones that are going to trap them.
Also make sure you tell the neighbor the issue... write an anonymous note saying there is Rat/mouse poison around and they are bringing in these cats to DIE ! No you do not put poison out, but the treat is enough to do it.
I did that with one neighbor and said it is under my deck and your cat is going under there. It kinda worked