I was reading in one of my chicken books that you can put pennyroyal in the coop and nesting boxes to keep the mites and lice out. It is in the mint family. If so ,I am going to plant some around my new coop to have for inside. It comes back every year and I guess proliferates greatly! I also read that chewing tobbacco is good to use a little in the nesting boxes with your other nesting materials and if they happen to eat some of it that it would help with worms as well... any thoughts or anyone use any of these things......I like the sound of the pennyroyal instead of a bunch of chemical treatment. I am a newbie here and this may have already been posted somewhere else...if so, excuse the noob