This incense is a very effective, chemical free, non-toxic mosquito shield. It has a completely natural fragrance and emits strong, refreshing notes that help to keep the majority of insects away. Place in a sturdy place, light the tip of the stick then blow out the flame. Caution: keep away from children and animals. Ensure proper ventilation when humans or animals are inside. Safe to burn indoors or outdoors. Use in any insect populated area especially at dawn and dusk. Studies show these can reduce landings of mosquitoes on individuals by up to 75%. Slow burning -each stick burns for approx 2 hours Lovely lemony smell 10 sticks in each pack Non toxic Ingredients: 70% parawood 30% lemongrass. incognito® products use all natural ingredients which means that different batches can smell, looks and feel different.