i do mine a little different than Snagly, but gets you to the same point.

After each trip, I just take a garden hose with a nozzle, and rinse the exterior until the water runs clear as it comes off the waders. About every 4th trip or after a weeks vacation of chasing metalheads, Ill rinse like this first, then take a bucket of mild soapy water, ands use a soft bristled whisk broom to scrub them. Rinse again until the water runs clear, and then hang them bootside up in your utility room over night, and they'll be fine. A towel on the floor makes the wife a little happier.

Nice thing about this method, is you can do them while you wear your waders. Nice to wear some light cotton long johns while you do it in the winter. this way, you can check for wader leaks, and get them repaired before the next trip. Little kids "sidewalk chalk" is a nice way to mark any punctures that need to be repaired. You can just brush it off after you fix your hole. Good luck, and hope this helps.