Hi, I have a new flock. A few came from everywhere. I checked my birds and all looked good. They are all about 12-15 weeks old. I noticed the 2 Cochins had small amounts of eggs around the neck area and face. After inspecting them I seen no lice.. anywhere. I checked all the other birds. Nothing. I pulled out the Dusting powder and treated all of them. Says to repeat 2x in 7 days increments. Its hard to the powder around the face. What should or how should I handle this. This is my first ever experience with this. Thanks So Much!!! Peterborough, Ontario Canada.