Just an fyi....I visited a bantam show breeder's house yesterday to adopt two older hens. The subject of Frontline came up and he showed me the "spray bottle" version that they buy, he said he gives the bird a spray on the vent, and then one under each wing. He says the stuff keeps mites and...
Seems a lot of the show chicken people use Frontline for mites and they say it works well. They seem to be very particular about the health of their birds so if it was dangerous to the chickens they wouldn't recommend it.
Not recommended that you hatch-out their eggs or eat eggs while they...