@norwex: Replying to @Rhianna Over time and frequent use, wool fibers get dried out which can cause them to be less effective. That’s why we recommend recharging after every 100 washes (or about 6 months!) to rehydrate them and prolong the life of your dryer balls! Dryer balls should last at least 1,000 washes. They can be washed with a full load of laundry, so it’s actually a very eco-friendly way to prolong the life of your initial purchase! 🌎 #dryerballs