Good things about Revolution
This topic surely had me guessing. I felt so sorry for you and your furry friends. I have never had a "mites" problem, but I do know that when one of my Abys arrived, as a kitten, I was given "Revolution" to treat her for a few months to make sure that she didn't come down with ringworm. My breeder used this treatment to prevent, rather than treat the problem after the start up. Catterys are special little breeding grounds for things other than cats. My guess is that you have had bad luck. Having a few cats increases your odds for having multiple pets having the same thing. Something we are (well nearly all) subject to. Is there anyone out there with just one pet? Oh yes, Karen and Paul! Who would have figured that?
I hope the recovery happens quickly and the cats begin to feel some relief immediately.
I had one cat, Mandy, my first Aby, that was a ringworm "carrier" although she never had an active case. Guess who got a case of ringworm? ME! My vet and doctor were sure Mandy was the source. She was my only pet at the time.
Again, I hope this torture for you and your kitties ends soon and you go back to your happy go lucky life.
Get rid of that dog. (Just kidding, of course).... :) :D