nposluszny
Chirping
Nasty yes, but incredibly effective against vermin. If you can secure your birds proper (I'm thinking hardware cloth) they will tear throught anything else that night be around and a potential threat to the chickens. On the other hand, they really REALLY hate moth ball crystals and those fabric softener crystals....possible perimeter repellent, if you put the birds away for night/be careful to not let them eat them. I found those crystals (both kinds) super effective against rats and mice, my local friends say that it's kept a persistent ermine away from their house (they have rabbits). They smell awful to tiny noses!I just looked the ermine up and that's one nasty critter.