I'm on my third year of raising chickens, and I did have lice one time. It was at the end of winter, beginning of spring. Apparently, wild birds may have given it to my flock, when they entered the hen house seeking shelter from foul weather.....
I used Seven dust two times, did a total coop clean out, and I haven't seen any since. I try and pick up a chicken and inspect them once or twice a week......
What is this pour on stuff? Ivomec? Is it expensive?