Alright, I am at my wits end. I discovered my chickens have lice about a month ago. So, I asked some questions, and started treating with DE every time, and wood ash, every now and then. I have been treating them 1-3 times a week, depending on my schedule, and they are still not gone. I have separated and bathed the roosters, b/c they were really bad off, because they kept on mating with the hens. The lice seem to be gone on the roosters. I dusted the hens again this morning, and out of the 30 hens I dusted, I did not spot any lice on 10 of them, the other 20 had anywhere from a couple to more than I could count. What is the incubation period for lice eggs? Am I still just dealing with eggs that are hatching? What will happen if I just let the hens have lice? -trying not to flip out and lose all sanity.