Doramection is a medication in the same class as ivermectin (Ivomec), selamectin (Revolution), etc. I do not know if it is available here in the US. Your 2 ferrets with the waxy buildup in the ears most likely still have an ear mite problem. I would suggest using the drops for another 3 weeks (on all of your ferrets and any other pets), continue with the frequent cleaning of the ears, and wash all of their bedding, hammocks, etc. Some cases may take 3-6 weeks to clear up. Usually after 3 weeks the mite eggs have hatched, and you have the "second batch" of ear mites to treat. If you still have mites after 6 weeks then it is time to change medication for the ear mites. Hang in there, Jerry Murray, DVM [Posted in FML issue 3406]