Okay so I bought ophthalmic cream and put it in their eyes (to protect them) then drenched a cotton ball in the permethrin solution and applied to all affected areas on their heads. They even had them in the crease below their eye ridge- terrible. We then held them by their feet and sprayed them all over trying to avoid their eyes. Then we took everything out of the coop and put shavings etc. in plastic bags for disposal, washed all the feeders and put them in the sun to dry, then sprayed the coop, nest boxes, all the places the chickens hang out and the lawn they graze on. We are exhausted.. and we are going to do the entire thing again in 2 weeks... !!! BTW How long does it take for the fleas to drop off?