In Australia we have a product called Advocate which it states that it is shown to be highly effective in the treatment of generalised demidicosis when administered at monthly intervals for 2 to 4 treatments. In a laboratory study performed on dogs naturally infested with Demodex Canis treating the dog with Advocate resulted in a decrease in the occurrence of erythema,casts,scales,crusts and alopecia and a significant reduction (97.84%) in mite numbers found in skin scrappings. In a field study, all dogs enrolled in the study were 100% cured of all Demodex mites. Maybe Im on the wrong page here but isnt this the same thing. I use it on my dogs monthly but not for that as it covers fleas and larvae, prevents heartworm, controls intestinal wormsand their larvae, the above plus sarcoptic mange, ear mites and lice. Expensive but worth it as my dogs dont get any infestations and I treat seperate for ticks. Cant be too careful in this climate.