Read some old threads per laser.
My experiences have been impressive.
Note that I don't have a front license plate and I use Veil on the front lenses/chromed/shiny areas.
> I have been directly hit in North GA in my previous car, a white Chevy Equinox at night, left hand lane on a clear shot (no rabbits providing interference) going 85 in a 70 zone--I braked and no problem.
> Same car, souteast of Atlanta, daytime, left lane about the same speed but caught scatter/reflection/interference with a car in the right hand lane--no problem.
> Yesterday, about the same speed in a dark blue compact SUV, daytime, going about the same speed, middle lane north of Briley Pkwy in Nashville, caught scatter/reflection/interference with a car in the right hand lane.
Scientific proof that it has saved me laser tickets? No, but I am impressed nonetheless and am clean and have money in my pocket.