The one spot Ivermectin Drops 0.8% 10ml that we have gets rid of feather lice and mites, Luckily we have never had mites, also we use garlic in the baths, heather and lavender in the nests and duramitex on the perches
I have also heard a beer mat soaked in creosote left to dry and place under nest bowls works as well
Feather mite sits on the feather and causes a lot of irritatin they are easily seen on the feathers
Itch mites burrow inth the feather shaft causing them to fall out, you will notice small pale spots on the underside of the feathers
Red mite hang about on underside of perches and dark corners, they come out at night and feed on the birds blood