Have been reading everything I can find here on worming, seems the only way to ensure proper worming is one by one.. Is there any other way of worming a larger flock? Our original girls are fine, 90 in all. We recently purchased 60 - 1 yr. old hens from a farmer who could no longer care for them. (yes, they are separated from our first flock) We are sure the new ones have worms & some have Vent Gleet so will be treating for both. Any advise would be so very welcome, what is usually a wonderful & relaxing is turning into stress & WHY did we do this .. Also with any treatment what is the "no egg" duration? We sell our eggs.. Thank you & will welcome all advise.