TIKI Brand BiteFighter LED String Lights allow you to enjoy season-long proven mosquito repellency without the mess and odor of sprays and creams. These outdoor string lights are one-of-a-kind that offer a silent and invisible zone of 330 square feet of protection. With just the flip of a switch, mosquito repellency is established in 15 minutes. Repellency can be turned off when you don't need it but still want to enjoy the ambient lighting. Weatherproof and suitable for wet locations, the design features a commercial grade, heavy duty 18/3 cord for outdoor use. With customizable coverage, configure your string lights numerous ways for the optimal coverage based upon your outdoor space. Based on studies that demonstrated a reduction in mosquitoes compared to untreated controls. Use as directed. Efficacy may be affected by weather conditions, configuration and distance from repellent pods, and individual physical factors. Season assumed as 200 hours or 90 days at an average use of 2.4 hours per day.