Citronella Outdoor Sticks. The Natural Way to Repel Mosquitoes. Clear the air. No DEET or Petroleum Wax. Powered by Essential Oils. Delightful Fresh Fragrance 10 Sticks. A Stick burns approximately 1 per hour. This delightful citronella, lemongrass and geranium incense will clear the air with a crisp, delightful fragrance. Storage: Store only in original container in a cool, dry area inaccessible to children and pets. Disposal: Place in trash or offer for recycling if available.