Permectrin II is Permethrin 10 as you found out. Maybe this will help. I have posted this previously. This will work for both lice and mites. I had some birds that were severely infested. I thought they were just molting but weren't getting their feathers back in when I discovered they had mites. I did some research and came up with permethrin. It works for both lice and mites. There is no egg withdrawal period with permethrin. For the mites, I have used the dust on the birds and in their nest boxes and sprayed inside of the coops, every crack and crevice, on and under the roosts, ceiling, walls, floors, anywhere the mites can hide. Nothing will kill the pests eggs so repeated (3 or 4) weekly treatments are necessary. Wear special clothing including a mask and gloves. I did a weekly spraying for awhile and put permethrin dust in the nest boxes, originally sprayed the birds getting under the wings and worked it through their feathers with gloves which you can also do with the dust. It will take a few weekly applications. Slowly my birds began to recover and get their feathers back in. I think if I hadn't treated with the permethrin when I did I probably would have lost some birds to the mites. The birds were in bad condition. Both are effective treatment. Both only kill live pests, not the mite or lice eggs eggs. Some people also use it for stick tight fleas that usually attach to the face of a bird. I use permethrin and put it on the ticks. They should eventually fall off. Good luck...