LOL, they claim grill surfaces are 'unsanitary'
I don’t care what they claim. Nothing can survive 600-700 degrees of heat. Anyway, I only use the sheets on the lower grate for easy clean up. They also generate quite a bet of smoke. That makes them convenient and functional in my book.
I know that you’re a charcoal fan; I’ve also used them on my charcoal grill. They make clean up easy, and they won’t allow small lumps to fall through the grate.
I just thought it was funny that they're trying to hawk their product with such a blatant lie. Anyway, I also use 2 grates 90 degrees to each other. Just MHO but my Weber Platinum is plenty easy to clean with a flick of the one touch mechanism. Using this is just unnecessary but I'm sure it has its fans with gassers.