Several of my hens have bare backs because of our rooster's mating. He is now gone and the hens are much happier, but I think they're getting bug bites on their bare backs now. They're not scratching, but I've noticed some small red spots. Is there something I can put on their backs to prevent bug bites? We have tiny bugs here called No-see-ums because they're so small you barely see them. They bite me and I'm thinking they could also bit the hens. Any suggestions? Thanks!