Wash with scrub brush, riggorously using Tide.
then spray with Scent Away.
It will get 90+%, but if will take a few wearings and more washings to get it to the level a deer can't smell you a mile away.
i got some new Rockys, stinking boot and I'm on my third wasting, and I can still smell them from 10 foot away. Deer are suppose to have smelling better than 500 times greater than man. go figure how much they can smell anything.