THe way mites do their damage is they burrow under the scales and make deposits of crusty crudy stuff ( I am sure there is a better term for this but when I was reading about them this is how I remember it!) and that pushes up the scales. Unless you remove this stuff it pretty much stays there for some time. When I was treating the ones I helped I brought the worst ones home with me and soaked their feet in vegetable or mineral oil every day and carefully picked off the crud. It took a couple weeks for the worst ones but I feel the first oiling actually killed the mites. The soaking I did was to soften the crud so I could get it off without bleeding or making sores. It is possible that what you see is the damage and crud instead of live mites.
sharon
sharon