I have horrible feet, and when I got a callus on my toe, I thought what else can happen to them. In the house we had the Dr. Scholl's Liquid Corn/Callus Remover, which also comes with 3 cushions. I read the instructions and it is very easy to use. I washed the toe readt to try it. I then opened the third of an ounce bottle. It had a dropper attached to the screw top. The smell was similar to that of a dentist's office, which took me back about 40 years. I allowed one drop to go onto the callus. I let is dry. There were 3 self sticking soft cushions with the liquid. I didn't put one on then, but the following evening used one, when I went dancing. I used the liquid corn/callus remover twice a day for approximately 10 days. As each day went by it just dryer. Then finally started to flake off. This is a very simple way of removing corns and calluses. The active ingredient in this is Salicylic Acid 17%. This is not suitable for diabetics, so Len can't use it. You should not use it for more than 2 weeks. You can also soak your corn/callus in warm water to help with the removal.
New Port Richey, FL