My elderly dad has extrememly dry cracked (we're talking BIG cracks!), callouses everywhere... on his feet. It's no wonder he can barely walk. His nails are long, rock hard and haven't been cut in years. He cannot reach his feet, so they go untreated. He rarely soaks them. I am not sure what I can do for him. He lives alone. I live 100 miles away, and he doesn't drive. So I can only go down for a day at a time and he won't be able to get to the doctors on a regular basis for treatment. If I had one day, maybe 4 hours... what would you suggest I can do to at least ease his pain a little?