^^ I agree nothing beats a handwash however when you live in Michigan or Toronto you have to clean the salt and crud off your vehicle and it's too cold to do it outside.
Given the option of dirty swirls + chemicals or just chemicals... I will take my chances with the touchless / trackless option for the winter.
Give you car a good coat of wax before the bad weather hits and do the same once spring hits and you will be fine.
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