Xpel Mosquito & Insect Repellent Bands Xpel Mosquito & Insect Repellent Bands provide long lasting protection against mosquitoes & other insects. They are effective for up to 120 hours if kept in the resealable bag provided when not in use & are suitable for all outdoor activities including swimming. In regions where mosquitos are very active, Xpel Mosquito & Insect Repellent Bands should be used in conjunction with other forms of protection.