Hello, I'm new. We have 5 Rhode Island Reds, 5 Americauna and 1 guinea. They have had a rough summer with LOTS of rain, cool weather then hot. I think they have been molting this summer and now I have at one with runny droppings. After adding some raw apple cider vinegar to their water the other day I found a runny dropping with worms. All the other poop in the coop looks normal. At first I thought it was maggots had gotten in the coop, but on further inspection I think not. On a google search I was able to read some info from this site about worming, but couldn't find it again once I have signed up. So I gather I should worm them quarterly??? I would like to worm them with something that is not poison. I do use diatomaceous earth but have not been consistent with its use lately. I have added apple cider vinegar and a crushed clove of garlic to their water buckets for now. Suggestions???