I have a small coop and run ~ 80Sq ft run and 4 chickens. I don't have many flies at the moment because I clean the coop and run 2x daily but I will be away for 2 months and would like to maintain it well, including flies. My husband will do the cleaning while I am gone. I don't want any smell and would certainly like to keep flies down too. Has any one tried this; http://www.scruggsfarm.com/Country-Vet-Country-Home-Kit.html Is it safe to use around chickens and how effective is it? I recently read about people putting vanilla airfreshers strips in the runs and coop - how well does that work?