I sure hope you are right. We have just been applying some Blok Guard/ Graffiti sealer on some split face block at work. One guy wore sun glasses another had on regular glasses. We tried every solvent known to man and 3M scrub pads of different aggressiveness to clean their glasses. Nothing would remove it. Broke the glass in the regular vision glasses trying, tossed the sun glasses. The product is made by Prosoco and the MSDS says it is paint thinner and 1,2,4-Trimethyl Benzene, neither of which is particularly harmful to humans; but, boy howdy, does it ever stick to stuff.
(top posted for your convenience) ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ Keep the whole world singing . . . . DanG (remove the sevens) snipped-for-privacy@7cox.net