If you don't wear proper footwear and underwear that lets your skin sweat, your feet are likely to collect moisture and smell bad at the end of the day. If you still play by the rules, your feet still smell bad, watch out:
Evans Fresh powders are ideal for feet that suffer from excessive sweating, as they capture moisture and do not allow more to be generated, thus keeping feet dry, moisturized and odourless.
Keep your feet free of moisture!