Comes with 3 cartridges & 1 resealable bag. No skin contact while wearing! Easy to use. Citronella scent. 1. Size fits most. Insert 1 scented cartridge and save the rest for later! Wrist band with the Bugables logo facing out. 2. Wrap wristband around wrist. 3. Secure wristband with metal clasp. Replace scented cartridge for wristband when not in use and store in resalable bag. Simply insert the scented cartridge and secure around your wrist. Store in original packaging or tightly sealed plastic bag to prolong the citronella scent. To dispose, place in trash or offer for recycling if available. Never place any unused product down any indoor or outdoor drain. Store in original packaging or tightly sealed plastic bag to prolong the citronella scent. To dispose, place in trash or offer for recycling if available. Never place any unused product down any indoor or outdoor drain.