I love this string lights. Those lights are only for outside use. Now we can enjoy our time outside and not worry about mosquitos. 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 lighting. Those string light are waterproof so don't need to worry about rain. It was very easy to set up, instructions are very helpful. Those lights are 36-foot string lights with 3 repellent pods designed for outdoor use. This product it is very high quality product, very well made that we enjoy using in our backyard.