Natural Deodorant Powder. * Alum Powder Deodorant Foot Powder use our deodorisng shoe powder in your shoes and stop the odour for good. Just a pinch in each shoe once a week and one packet will last a WHOLE YEAR. * The shoe powder will last 1 year, making economical as well as a no-fuss product. * Plus, due to it's bacteria and fungi-killing properties it can also be used to relieve foot and shoe odour, athlete's foot.