This idea is very unique, I haven't heard any business like this except for business like bowling and ice skating where customers should rent shoes before they

This idea is very unique, I haven't heard any business like this except for business like bowling and ice skating where customers should rent shoes before they can play. I agree that the possible problem on this is sanitation. You should think of idea how to resolve this. Maybe you can use the idea of using socks, stockings or removal insole. Goodluck.