Each set of citronella incense sticks has 150 sticks, and the burning time of each stick is about 40-45 minutes (wind may shorten the burning time) Add a variety of plant essential oils: Our citronella incense sticks are made with citronella oil, lemongrass oil and rosemary oil. Natural ingredients: Our citronella incense sticks are natural and free of harmful chemicals. Citronella incense suitable for indoor and outdoor use: Suitable for use in bedrooms, living rooms, patios or during outdoor activities such as parks, beaches, swimming pools, decks, camping, fishing and more. Warm prompt: Thank you very much for choosing our citronella incense sticks. If you have any questions or needs about our products, please feel free to contact us, thank you! Citronella incense suitable for indoor and outdoor use: Suitable for use in bedrooms, living rooms, patios or during outdoor activities such as parks, beaches, swimming pools, decks, camping, fishing and more.