These cones must only be used with backflow burners.
24 cones in each container and each one burns approx 20 mins
Backflow incense flows down through a backflow burner and creates a mist around the product. When backflow incense burns the mist it creates can leave a light residue on the burner and the surface the burner is placed on. This is from natural oils and resins within the incense and can be wiped clean with a damp cloth. Never leave burning incense unattended and always place incense burners on a heatproof surface.