I have 6 hens, 4 of which have scaly leg mites. I just did my first bi-annual worming with them today. I used fenbendazole orally and Ivermectin topically. I used 4 drops of the Ivermectin. My question is, on the ladies that are showing signs of scaly leg mites, should I continue treatment with the Ivermectin a couple more times, and if so, when? I think what I have gathered is that it does not kill the mite eggs so repeat treatments is necessary. What do you all think? I have tried Vaseline before and it did seem to help the one hen that had it at the time, but the mites just came back and have spread through most of the flock. Thank you for your advice!!