are we dealing with mites?

[NewFlockOnTheBlock]

Good point, thank you! I may need to re-dose. From what I've read, ivermectin is fairly harmless to chickens, so another dose shouldn't hurt.

 

[Cragg Klefor]

As far as I'm aware, deplumbing mites - unlike the other types of chicken mites, give birth to live young not eggs so one dose is supposed to do the job, so long as it's the correct amount.