I spent most of my day working in the office environment wearing dress shoes. Because my feet would constantly sweat I tried various ways to decrease the sweatiness by wearing thinner socks, taking the shoes off while working at my desk, carrying a spare set of socks with me etc. I used foot powder before but I found that too messy. My girlfriend told me that she discovered a product that has helped her eliminate sweat and odor for her feet and urged me to try it. I sprayed my feet with Blue Sand for 3 days straight, as per instructions, and noticed that my foot odor disappeared and the sweat was greatly reduced. I applied the spray again a week later, for two days straight, and discovered that my feet stopped sweating completely. I have not experienced any foot odor since I started using Blue Sand. When I start to feel the sweat is coming back I reapply blue sand and after one or two applications my feet are sweat-free again for the next few weeks. Thanks Blue Sand!