[truckster]

Supposedly, if you use the red (chlorinated) solvent you'll produce phosgene gas even if the solvent has evaporated.

I used to buy a ton of the Walmart Supertech brand, but they haven't had it in stock lately.

I didn't know about the case price at O'Reilly's. I'll have to ask the next time I'm in there. I thought about buying in bulk (gallon cans) and buying a sprayer, but the cost per gallon was more than buying the equivalent in spray cans.