What I do is the Garry Dean method. I use 2 buckets both with grit guards. One with MF towels and rinseless wash solution and the other is empty. No dirty towels ever get into the rinseless wash. After I finish I save the left over rinseless wash and put them in spray bottles or a garden sprayer. Then I use that as a waterless wash or to pre-soak a panel when I i do another rinseless wash.