How do you whiten Nike midsoles?

Mix equal parts bleach and water. Dip an old toothbrush or equivalent soft bristled brush into the mix. Use this to scrub the sole of your shoe, paying particular attention to the yellowed areas. Rinse thoroughly with running water.

How can I make my white Nikes white again?

Make a solution of 1 part bleach to 4 parts water. Dip an old toothbrush in the solution, then scrub the dirty parts of your shoes. Rinse the scrub brush with water, then, keeping it wet, scrub the stains until they’re gone.

How do you get stains out of midsoles?

Midsoles are made out of foam or rubber, so you can use a stiffer brush. Once again: cleaning solution and scrub. If something isn’t getting out, you can use a “neat” solution on a microfiber cloth. If that doesn’t remove it, you can use a bit of deglazer on a microfiber cloth.