I have done the freezing w/ no luck also - also tried the running thru the dryer's hottest cycle for 2 hours...I think they smelled worse!!
(High heat should kill the bacteria, more so than the cold...)
I HAVE done one "trick" that worked - but it was not on Merrills (they were cheapo flats, but I
them)
so repeat at your own risk. Make a sloution of 70 percent ethyl alcohol to 30% water (often enough rubbing alcohol may be this...need to check the bottle...) I know from my job that this dilution is IDEAL for killing bacteria (as opposed to straight 100% alcohol....which doesn't kill as well, isnt that funny...
)
I poured/rubbed it (rubbed HARD w/ the scratchy/green side of a sponge)onto the soles and repeated a couple of times, (rinsed w/ water in between treatments...ewww, the color of that water!) Then I set them in direct sun for a couple of days. (Warning they may smell worse at first , but after the sun time it was ALL GONE!!!
) I hope this can help someone.
ps - not to sound too happy, but with my
Keens this never happens - the soles are treated w/ some anti-microbial stuff!