Found red mite in the coop about 10 days ago when cleaning out. Only around the perch ends. Removed all I could find, sprayed perches & DE'd even more than I usually do. Hens were dusted twice too. This weekend there were no signs of any surviving mites in the coop so I thought we were ok. However, the hens are still plucking out feathers from various places. I was under the impression that red mite don't live on the bird so treating the coop would normally be enough to clear it.
I've read the other current mite thread - I haven't seen signs of any other infestation other than the red mite. Anything else I can do? Do I need to keep dusting the ladies?