Rubber boots sprayed liberally with some sort of scent-away product are about the best I've found so far. I stress the best so far; they are not foolproof.

Case in point: I was hunting a new area a few years back, and walked in to a relatively open corner of some woods. I point out the openness because I didn't brush against anything while walking in, yet as I sat in my climber an hour later and watched a young forkhorn circle around, I swear it looked like someone hit him with a 2x4 smack in the face when he came across my scent trail where I entered the woods. Now, I'm religious with scent control, to the point I dry off with a towel stored with earth-scent wafers. I tuck the legs of my pants into my LaCrosse boots, yet this young deer picked up enough scent left behind from my rubber boots to make it look like Mike Tyson had just delivered a straight cross to his chin!

Rubber boots are great, but not foolproof.