Here's the problem, I'm allergic to almost every type of chemical pesticide. Can't even go within 100 ft of Sevin Dust! And now that we have chickens I know we are eventually going to have to deal with pests for some reason or another. I'm having a bit of trouble getting DE due to it being out of stock or so cost prohibitive. Are there any other products out there I need to be looking for to deal with mites, lice, worms, etc?