Ok, I'll skip the ivermectin then. I notice the information you posted on Elector has no withdrawal time for eggs though. I am kind of leery of this cause I used Frontline on my hens last Fall & then I found out that the withdrawal time is actually 200 days! I'll see if I can find any info on withdrawal time but thanks!
Elector has been approved for use in poultry so it has been studied-- if it says no withdrawl, then there is no withdrawl for it.
Most of the stuff we use on poultry has not been approved so we really do not know and are guessing.