I have dried out feet. They are all callously around the heels and balls of my feet.

I tried using a mini-pedi form Wal-Mart and it did not help much. Usually when it gets that bad I go to a salon and get my feet scraped. I can’t due to Covid-19 for maybe a month or so.

What different things can I try?
Also will direct sunlight help my feet?
Or should I wait for the salon to open?