My hen has been attacked by maggots again, this time I didn't get to them as quickly as I did last time, so there is more surface damage this time. My red hen has a problem with having a "poopy butt" and thus attracts the flies that lay the eggs and the maggots that feast on her flesh. I've washed them away and put a topical ointment on her again. I'm wondering if there is something else I can do besides trimming her vent feathers to ward this off from happening again? I can't imagine its normal to have to keep up this kind of maintenance? Advice or tips?