I found lice on my 4 girls. So after reading on BYC and a few other sites I bought some Eqvalan - M41(liquid) - .08% Ivermectin Pigeon wormer. I gave them 2 tsps in 2 quarts of water for 2 days. I treated them on March 12th. I just checked them and didn't see any lice on 3 of them. One of them still has lots of lice on her. I was going to retreat them in 10 days to take care of the egg hatch. Now I don't know if I should retreat the one that still has lice now or wait a few more days to see if they die off or just wait the 10 days. I am brand new at raising chickens. Have had my girls since last May. I nearly lost this same chicken last fall to lice. I used a very toxic powder on her then and didn't want to use that again. She is the happiest I have ever seen her. She had a very hard molt in the fall too. Had to keep her in my garage away from the other chickens as she was very nearly naked. Thanks in advance for any advice.