Foil-wrapped tablets complement your Lifesystems Plug-in Mosquito repellent. A pack of 10 Mats provides up to 10 nights of protection (4-6 hours per night).DEET-free, no sprays or lotions on your skin. No smoke, flames, or strong scents. Experience maximum defense in 50 seconds. Our Mosquito Repellent Mat is independently tested, SDS certified for safety & effectiveness—people and pet friendly.