I have had a black granite countertop for over 2 years with no problems,
resealing about every 6 months. Today, my wife noticed some white spots,
she thought that something had spilled, and tried to clean it off, with no
success. To me, it looks like the polish has been etched off by some
material that spilled on it, and the white spots are actually the raw
granite with no polish. I have no idea what substance could have done this
to my granite, I hear the usual about oil, vinegar etc, but this is extreme,
and seems way beyond those, this is down to raw granite in no time at all.

I have my suspicions. My wife yesterday was using Dr. Scholl's Freeze Away
wart remover for a wart on my son's foot. She claims that she was super
careful, and was not even in the vicinity of the granite, who knows. This
stuff is gaseous too, so I suspect some may he gotten on the counter
somehow. This stuff is dimethyl ether and propane. Described as:
Dimethyl ether gas is water soluble. It has the formula CH3OCH3. Dimethyl
ether is used as an aerosol spray propellant. And used in conjunction with
propane to create a chemical reaction in which cryogenic freezing is used
for the removal of common warts found on the human body.

Whatever it was, it sure etched the crap out of my granite in a few spots.
See pic at:
http://pic7.picturetrail.com/VOL208/.../185122138.jpg

How can I fix this and how much should it cost?