Jason Markk Moso Shoe Inserts help to remove odors, bacteria, pollutants, allergens, mold and mildew from your shoes. Throw them in when you’re not wearing them and they’ll be completely neutralized in a few days. To recharge them, place them in direct sunlight for one hour, once a month. Each one can be recharged up to twelve times. Use the handy planner printed on the back of each sachet so you know how many times you’ve recharged them!