Two types of Incense are commonly available: combustible and non-combustible. The combustible type usually contains potassium nitrate (saltpeter) to aid in burning, while the latter does not. Combustible Incense can be burned in the form of bricks, cones, sticks and other shapes, whereas non-combustible Incense must be sprinkled onto glowing charcoal blocks or directly onto a fire to release its fragrance.
Two types of Incense are commonly available: combustible and non-combustible. The combustible type usually contains potassium nitrate (saltpeter) to aid in burning, while the latter does not. Combustible Incense can be burned in the form of bricks, cones, sticks and other shapes, whereas non-combustible Incense must be sprinkled onto glowing charcoal blocks or directly onto a fire to release its fragrance. 
