Well I finally found the sneaker maintenance post (man that thing is hard to find...lol) and I tried using barkeepers friend on the mesh of an old pair of 2001 retro Concords. I did two treatments. One with the BK friend to water solution having a milk-like texture which didn't whiten them very much. Then on the 2nd application, I went with a much thicker solution. This time, they whitened up a LOT, but there is so much residual white powdery substance left over that I can't really wear them. I've tried using damp paper towels to wipe off as much as I can, but it's still not working. Does anybody else have any pointers. Would a trip through the washing machine in a pillow case be a no-no? Or perhaps even the dishwasher. I just can't think of any other ideas.