I used to soak and file my feet until...
I started using the ideas at the Ask Moreless forum.
Once my body was not under-supplied with alkaline minerals, was well-nourished and no longer overly acidic, the crusty heel problem disappeared. So did lots of other things that I never would have thought were connected to pH, diet, and alkaline mineral supply.
Others were also helped with similar problems to this. If yo go to that forum and do a search there, you'll find some interesting stuff.
Hope you decide to give it a try, 78764!
Keep seeking, applying, sharing accurate knowledge in order to
keep seeking abundant life and joy!
NEVER give up!!!!
Di