In the last few weeks about 1/3 of my flock looks like somebody took pinking shears to their backs. My favorite rooster and now one of my hens have died. Their coop is very dirty as everything is frozen and I can't get in there to clean. I haven't wormed them in a very long time and now I've been advised to de-bug them (even though I checked their vents and didn't see any bugs). #1. Is 5% Sevin for the bugs and Wazine for the wormer okay and at the same time? #2. How long do I have to wait to eat the eggs after they've been wormed? #3. Any other ideas what might be wrong? Thanks for any help anyone can give.