Mosquito repellent patch no DEET,100% harbel, raw material: natural citronella oil ... natural citronella oil.Effective about 10 hours for one patch.Convenient and easy to carry.Simply to past on cloth ... Instruction:1. open the pouch take out the patch directly.2. past the patch on desk, table, cloth, or anywhere ... into the pouch in order to keep the the patch long life, flod and clip the pouch, open ...