That's as delicate as I could be I noticed this afternoon that t least two of my hens have a nasty accumulation of poop dried to their feathers. It is not blocking the vent, but it looks awful and probably isn't all that sanitary. Is there a best way to clean it up? I realize it could be due to their diet, but I don't know what the critical factor would be? Too much of something? Not enough? Fillers in the commercial feed? I use Dumor (I think that's the brand name) crumbles for layers. They have access to clean water all day.