Severe infestation that got out of hand because I have been too old and ill to cope. I have someone coming to pressure wash the coop. Should we use any soap or? in the water for the washing? I'm hoping to get someone to whitewash the interior of the coop. I have put up an ad to pay someone to come and treat the chickens, but no responses yet. is there something I should do to treat the area where they dust bathe? they are very freerange and a bit feral. Any advice? And if you are in the Sacramento area, I'll pay you to deal with this. Any advice appreciated.