I have been using this method for well over 30 years. Go to the feed store and get the stout iodine. Mix alcohol and white vinegar 50/50, then put the iodine in it until it is the color of strong tea. I use a plastic squirt bottle and put it in each ear and rub it in. It kills them on the spot period.
How many times per day and for how many days do you treat them?
Sent from my SAMSUNG-SGH-I537 using Tapatalk