100% Natural Outdoor Mosquito Sticks are your NATURAL choice for your OUTDOOR mosquito repellent. No more chemical sprays or toxic candles!! Made by using ONLY plant oils and wood powders including: citronella, lemongrass, rosemary, peppermint, geranium and clove. Safe for us, the environment and wildlife. Each stick burns for 2 hours and covers 100 square feet. Each box contains 6 stick at 10 inches and will repel unwanted bugs for 2-4 hours depending on winds.