Hi guys Recently I got two new cochins. I am new to chickens, but do know that all animals should be quarantined 2-3 weeks prior to introducing them. I did not mix the new cochin we got. The other I gave to a friend who unfortunately did not listen to me and added the chicken into his flock. I did look up on parasites for pullets; I was able to identify poultry lice on the cochins. So I took them a dust bath first with just regular dirt. Then I took them a shower with flea and lice shampoo. They started to literary jump out from the chicken. It was so gross. I feel so bad for the cochins. I have been doing more reasrch and will get seven dust for the chickens; I think this is better than taking them a shower with water. I would rather just take them a shower with powder. This is what I have read please correct any of the information bellow. Treatment should last 3 weeks applying it once a week in intervals of 7 days. My family members don't know how to introduce new chickens. They did not listen to me and did what they wanted. This morning they mixed the cochins with our other flock. The cochin was badly beat up. I have no idea why they did what they did when obviously one is infested with lice. So now the problem just got a lot bigger. I need to treat all the girls. How often do I change the bedding during these 3 next weeks of treatment? I am going to go to my friend and take their chickens a bath too and change out the chickens bedding. This has turned into a nightmare for me lol Please guide me. Things have just taken a turn for the worst. Hopefully I can get all of them lice free! Cynthia Ps: Should I also treat the chicks? Is it safe to use Seven Dust on chicks?