Earlier in the year I got a treadmill to start getting back into shape. I have a pair of running shoes set aside specifically for use on the treadmill. I started noticing a slight smell from the shoes around May. I figured being worn 4 or 5 times a week, maybe I needed to get a second pair to rotate between use to let them thoroughly dry. In June, I started noticing a smell in the shoes again, so started looking into ways to keep the smell at bay and ensure they were free of any fungus that could cause problems with my feet. This was especially important as i'm now running 5 miles every day on the treadmill. I saw these bamboo charcoal bags rated highly, so I decided to give them a try. They arrived quickly through amazon prime. Following the instructions included, I left the individual bags in the sun for a few hours to "activate" the charcoal. I then place a pair in each of my shoes. After just a few days, I noticed the shoes had no smell at all. Seriously, no smell, I put them right up to my face and nothing. It has been over a month now they still work great. The instructions indicate to put the bags back in the sun for a few hours once a month to refresh the charcoal. I've done that once so far and no issues or smells to comment on. They seem to be working great. The package had a bunch of them included, so i gave some to my wife to put in her shoes as well. I'm very happy with the outcome of this product and highly recommend them.
Earlier in the year I got a treadmill to start getting back into shape. I have a pair of running shoes set aside specifically for use on the treadmill. I started noticing a slight smell from the shoes around May. I figured being worn 4 or 5 times a week, maybe I needed to get a second pair to rotate between use to let them thoroughly dry. In June, I started noticing a smell in the shoes again, so started looking into ways to keep the smell at bay and ensure they were free of any fungus that could cause problems with my feet. This was especially important as i'm now running 5 miles every day on the treadmill. I saw these bamboo charcoal bags rated highly, so I decided to give them a try. They arrived quickly through amazon prime. Following the instructions included, I left the individual bags in the sun for a few hours to "activate" the charcoal. I then place a pair in each of my shoes. After just a few days, I noticed the shoes had no smell at all. Seriously, no smell, I put them right up to my face and nothing. It has been over a month now they still work great. The instructions indicate to put the bags back in the sun for a few hours once a month to refresh the charcoal. I've done that once so far and no issues or smells to comment on. They seem to be working great. The package had a bunch of them included, so i gave some to my wife to put in her shoes as well. I'm very happy with the outcome of this product and highly recommend them.