Please recommend a foot callus remover

My skin is naturally dry, so it's prone to flaking. Now that the weather's getting warmer... I'm really concerned about this area when I wear sandals, so I worry about it every summer.

If you get your dead skin cells removed at a nail salon or something, it won't last long.

Is there a place that specializes in things like exfoliation?

If there's a good place, I'd like to settle down.