I have bought some solar lights that are supposed to come on whenever something passes thru...well we've put one solar light on the outside to keep predators away and weve noticed that the rats seem to have gone away as well? I've read that if the lights are on or come on the rats will eventually leave the area. We were wanting to put some solar lights INSIDE the coop to keep the mice away and to help keep predators away. I've read conflicting things though..some say that it will keep the chickens awake and that it will eventually cause health issues because they don't get enough sleep. Thanks so much for any help.