If it helps, there is a lot more scary about raccoons than just the fact they'll get your chickens. A huge percentage (up to 100% in some areas) of the raccoons in the US carry a certain type of roundworm. When they poop, they release roundworm eggs into the soil, which can live in the soil for up to 14 yrs (or maybe more). Nothing kills them except fire (and possible roundworm medications). If a human somehow ingests these eggs, whether it gets on their shoes and subsequently in their house and somehow in their mouth/nose or if a child is playing in the dirt and puts their hands in the mouth or whatever, it can cause blindness or even death. It's very dangerous. You can google Baylisascaris procyonis to get more info.