Jack "the Ghost Rider" Sweeney wrote an awesome review of Pearly's on one of the worlds busiest biking sites www.bikecommuters.com!
Jack had his son do the laboratory testing on Pearly's odor control and writes "Pearly’s claims that their socks remain stink-free (like most wool clothing does) over several days of use. In the interest of science (and, to be fair, to mess with my child a bit), I wore these socks for about 5 days in a row and had my boy give them the “sniff test”. The results:....."
To learn what Jack's son thinks his dad's socks smell like...read the full review here: http://www.bikecommuters.com/2013/11/12/review-pearlys-possum-socks/