I've been negligent in washing my (USA) apples & grapes before eating them. I know you're s'posed to, but somehow I wonder just how much washing them removes anyway. I know there's soaps that you can get that are designed for rinsing fruit, but I don't want to go that far if I don't have to. What is the frosty-looking coating on red grapes? Simple rinsing doesn't take it off, it seems somewhat waxy. If there's pesticides in that, no simple washing will get rid of it.