Lot of 6 (six) DynaShield Mosquito Repellent Devices Using the DynaShield Mosquito Repellent device is a great way to protect your outdoor space from mosquitoes while contributing to your outdoor decor. Using a blend of natural essential oils, DynaShield gently fills the air with a pleasant summer scent that keeps mosquitoes away. for your convenience, each repellent pad lasts up to 6-hours. The DynaShield Mosquito Repellent device can operate up to 45-hours continuously, depending on the type of AA batteries used. Safe to use around pets and children when used as directed, this device is perfect for protecting your family from mosquitoes. Battery-powered and light weight, DynaShield can be placed anywhere with ease. By combining multiple devices, you can cover a larger area by placing devices 20 ft. apart. Each of the six boxes also contains 3 refills, ensuring you are stocked for up to 18 full hours of protection. Returns are allowable for 30 days as long as all of the boxes/ devices are UNOPENED AND UNUSED. Opening and/ or using any of the devices forfeits your rights to a refund. Please note that the buyer is responsible for return shipping. Please message us with any question or concerns prior to purchase.