Hello,
I think that I have an invention, that seems to be a great idea.  I have
made a mitten type cover for those tiny little feet.  I have made them so
they will not come off, by attaching to the harness.
 
This was designed to keep feet warm.  We live in a cold climate, yet the
critters love to go out and play.
 
I am still trying to improve on the rear mittens, they tend to sag a bit.
Mostly if it is wet out side.
 
Back to the scratching thing, they can't dig holes with the front mittens
on.  This does not seem to bother the carpet sharks.
 
I will post again when I have completed my project.
[Posted in FML issue 2951]