Your time outside should be pleasant and relaxing, not swatting annoying insects away. With Ortho® Home Defense® perimeter protection repellent candles, you can establish a protective perimeter to repel mosquitoes. The candles are made with essential oils that create a mellow, fresh citrus scent. Ortho® Home Defense® perimeter protection repellent candles uses essential oil that repel 2X more mosquitoes than citronella, giving you and your family a more enjoyable outdoor experience.