One of the threads on this site mentioned 'purple power ear solution.' So I decided to give it a try after spending relentless hours and dollars on vet ointments to cure the problem. I found the recipe and then headed to Walgreen's. After spending 15 minutes scouring the shelfs, found that Gential Violet Solution had to be special ordered. I then looked for Boric Acid Powder. I finally captured an employee and he took me over to the pest section of the store and pulled out this "Boric Acid Powder' guaranteed to kill ants and cockroaches. My common sense told me that putting that stuff down my dogs ears was not a smart thing to do. I finally learned from the pharmacist that Walgreens doesn't carry that item, but I was given the name of another pharmacy to check with. In the end, I walked out of Walgreens with the Isopropyl Alcohol. I feel like I'm on a treasure hunt.