I've been doing ONR with a grout sponge and love it except for one thing. I feel like I use WAY too much solution for my Acura TSX. I can barely make 5 gallons work and that doesn't even include the wheels. If I use a MF mitt I use a little less, but if I use microfiber then I'll do the Garry Dean method instead.
Is everyone else the same? Do you use more ONR with a grout sponge?
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