Leather sneaker:
For scuff marks, try swabbing with nail-polish remover and then wiping clean. If the whole shoe starts yellowing or darkening, spray with a 50/50 mixture of water and lemon juice and let sit in the sun for a full day.
Canvas sneaker:
The 50/50 mixture of water and lemon juice works for canvas, too, but for more serious stains, mix a tablespoon of baking soda with a touch of water and rub the sticky paste onto the offending spots. Wipe dry. Or try a whitening polish like Hollywood Sani-White.
Leather shoe:
For lighter scuff marks, lightly rub a pencil eraser against the area. Still dirty? Hollywood Sani-White and similar polishes work, too. But if the shoes were never white to begin with, try slapping on a fresh coat of matte white latex paint.
Sunisa