Phil, I’m lookin’ forward to using the sray foam on the greasy fingerprints. The spray foam at our local janitor supply (made by Aero) is called “Kleer View” is somewhere around 3 bucks and I’ll only have to use very little of it on the grease prints at the restaurant.
I’ve used that spray foam on Frenchies in the past and it was too expensive to do really large homes with all Frenchies. But used sporadically on restaurant glass one can of spray foam cleaner should last a while. Well worth the small cost if it does what I’m hoping it will do to those greasy fingerprints.
I’ll be doing this particular restaurant sometime next week. I’ll use the spray foam and let you guys know how well it works. If it cuts this chicken grease it will cut anything within reason. If it works it’s going to cut my time down a good bit on this gig. Less time = mo dough per hour.