Stop the Stink is a decent commercial product but baking soda powder works to refresh also. I wash mine out at days end,in the creek or home with a shot of liquid dish soap and no mo'smellm'. At seasons end,if you have one,soak in the tub with both and walk on it,take a shower the next day as you thusly push the solution into/outof the rubber pores and remove that nasty skin sluffoff-John
Seems like I know someone that "brownsuited" one day dredging after a couple of burritos the night before. Thats when you really need to clean the old suit up. Also I had a guy puke in the regulator once. I let him dredge for quite a while after that. Leonard