I have had a chicken in quarantine for a couple of weeks now due to an illness and possible infection. She was treated for coccidia and also given amoxicillin (today is her last dose). She was very lethargic and not eating for most of this time and definitely not laying she has turned a corner this week. She is finally up and walking around and foraging in the grass. She does not seem interested in her feed yet and her stool is still very runny. When putting her up for the night the other day I saw TINY little bugs on her legs. And I mean tiny. And if I touched her they would crawl on me. I changed all bedding and dusted the new bedding with first saturday lime (it's what I have right now), yesterday I made her a dust bath and held her in it and rubbed it all in her feathers. She hasn't been doing this herself since being sick. I looked at my other chickens and I don't currently see any signs of mites so I think it is just her since she has not had access to them for a couple weeks. This is my first time dealing with mites. I have no idea what kind they are. They are not red in color and they are about the size of the period at the end of this sentence. What is the best treatment for this? I have been reading about Ivermectin Pour on as an option. And once treated how do I prevent it? All the healthy chickens dust themselves in the yard regularly. Thank you for your help!