Murphy's Naturals Mosquito Repellent Incense SticksThe product that inspired it all. When our incense sticks burn, our tested blend of essential oils is released into the air to repel mosquitoes. This incense provides up to 2. 5 hours of protection. AKA, the perfect amount of time to host a backyard bash. Yes, we did that just for you. 12 incense sticks included, incense holder sold separately. TESTED & TRUSTED We test our repellent incense at New Mexico State University's Molecular Vector Physiology