To control sweaty feet, be sure to remove your socks and shoes when you can to let your feet air dry. Choose shoes made out of breathable, natural materials like leather or canvas and socks that are moisture wicking. Be sure to change your socks and shoes frequently during the day to decrease odor. Soaking your feet can help too.
If your feet need a little something more to keep them fresh, consider an antiperspirant. Roll-ons or sprays work best.