If you aren't intending to eat any you could get some Vetafarm Avian Insect Liquidator. It's safe to use on newly hatched finch chicks so safe for chicken chicks. I've used it on my girls when I had an outbreak. It gives up to 6 weeks protection, which helps you get on top of the population hiding in your coop. While cleaning the coop I sprayed it on some mites out of interest. They stopped moving very quickly.