You are not suppose to aplly products in the direct sun or to a hot surface but what if you dont have a way of doing it in the shade? What is a person suppose to do?
I agree with MongooseGA. It's one of the reasons I have PB's products. I have no other choice than to work in the driveway...my single car garage is too narrow to work in...and PB's give you product instructons for different types of weather.