i assumed these would be OK, but i never thought to ask. those foam brush thingies at car washes, the ones used to "scrub" your car with, are those OK for our cars? i know years ago, you weren't supposed to used any kind of brush at a car wash (back in the days where they had those big ones that rolled over your car) because it would create swirl marks all over your finish, but what about those wand ones in the DIY car wash bays? are they OK?
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