Ive used it for the last two years on my wifes 2010 HIghlander, and from day one on my 2015 Tundra. The stuff CT is throwing on the roads these days is bad enough to rot out the frame work for bridges, so anything you put on your frame/car is better than nothing.
Stuff sticks well, and goes on either thin or thick depending on how much you want to use. I CANNOT stand the smell of it though - to me and even my friends, it makes my truck smell like dog shit. I can't deny its uses, but after the last time I sprayed my frame in December, Ive since just resorted to some diesel in a spray bottle after I wash the truck down. I can have the frame coated with a light mist within 10 minutes and the spray bottle is easier to use than spray cans. Like I said - 'anything' is better than nothing....