We have 2 1 year old cat cats. Patches, the neutered female, has a
reoccuring problem. The skin between the pads on the feet gets raw. The
first time (the left front foot) the vet gave us steroids and an antibiotic
which cleared it up. The next time (again left front) I cleaned it with
hydrogen peroxide and applied neosporin. It cleared up after a few days. Now
the the right front has the same problem.
It is only one foot at a time. She may limp some and licks it a lot.

They are never outside, the house is clean, the litter is a clean clay type
the first time but now we are using "The World's Best Litter". It is great,
not odor and is flushable.  They are not declawed but the claws are clipped
carefully.

Any ideas as what might be causing the problem?

Thanks