I don't. I just chuck em in the bath to dry out & incur the wrath of the misses !!!! My advice (unfortunately, based on experience this year) is to make sure that you flush any sand & grit out of them, or it'll wear through the boot on your waders (if you have the neoprene sock version).
I have a hook on the front of the garage wall, first thing when I get out of the car is hang up the waders, turn on the outside hoze and rinse then down, then I rince out the boots and soles, then hang in garage. In fact just done it 30minutes ago, makes you relax knowing there done and the cuppa tastes lovely Rods and lures inside in the shower.