Incognito citronella incense sticks 1gthis 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 studies show these can reduce landings of mosquitoes on individuals by up to 75 use in any insect populated area especially at dawn and dusk safe to burn indoors or outdoors slow burning each stick burns for around 1 hour lovely lemony smell 10 sticks in e