@donasmrs-- I agree with you but I also agree that there are callus creams out there that do not do a thing. In my opinion, a good callus cream won't just soften the calluses but will also help the dead skin break down and come off. Most callus creams do this with an ingredient called urea. It's possible that a callus cream doesn't have enough of this ingredient to really make a difference.
The best way to choose an effective callus cream is to read reviews. Honest customer reviews help me a lot when I'm shopping. If a product doesn't work, people will say it in their reviews.