This is not about Michael Jackson! - (Fill in your own punch-line) I have a pair of Magnum Protec (Steel Toe Cap) for about two months. They are worn about 10-12 hours daily, 4-5 days a week. Over the past few weeks, they keep getting white patches on them around the front after 4+ hours wear. They are polished (although not bulled - not necessary for current job) every night with parade gloss. I understand this is due to sweat salts from the feet, but I have never had this problem with any other boots in the past. Any ideas how I can stop this happening? Thanks!