Small Pebbles Size Backflow Incense Burner

All of these are very smart burners required to use unique backflow incense cones. If you use back-flow incense cone on a regular incense burner it will function as a normal incense cone

Regular incense cones can be used in backflow burners, but they will not produce the same effect as backflow-specific incense cones. The smoke from regular incense cones will not cascade down in the same way as it does with backflow cones, so you won't get the full effect of the burner.