I have a 1.5 year old Barred Rock who has out of the blue been a victim of constant bullying from my Wyandotte and Ameraucana for the past week. They pecked all the feathers off the back of her head and finally succeeded in pecking a bleeding wound in the bald spot. It didn't look very deep, just irritated and a bit raw. I have her separated now in a new "chicken infirmary" I built in the run so she can still see the other chickens. I sprayed it with Blu-Kote yesterday morning and evening and again this morning, but she took a nice long dust bath as soon as I let her out of the cat carrier and into her new fenced in area. It was no longer bleeding this morning and had formed a bit of a scab after the other hens couldn't get to her. The scab and entire area that had the Blu-Kote is now covered in dirt. Do I need to clean all the dirt off? Should I keep spraying the Blu-Kote on it now that it's not bleeding? Is there anything special I should be doing to it?