Most helpful critical review
3 of 3 people found the following review helpful
DOES NOT WORK ON BLACK TAR-LIKE MASTIC
on January 10, 2012
This does not work on the old tar like black mastic, which I heard might contain asbestos(so don't try to grind it up). Just got in some bean-e-doo, works great for this. Just sorry I bought 2 gallons of the Krud Kutter first. May work for other applications, but didn't even slightly work for this!!