Citronella Incense Sticks Keep insects at bay the natural way with these slow-burning citronella incense sticks. Made with 100% natural, non-toxic ingredients, they release a fresh citrus aroma that’s pleasant for you, but not for the bugs. Each stick burns for around an hour, creating a gentle shield of scent that helps you enjoy your time outdoors without the constant swatting. Ten sticks per pack, and no synthetic nasties in sight.