Here's how to do it:

To get density smoke you should burn this incense on a charcoal. Before you start, you should open all windows in the rooms which you want to clean, because this incense smells very fiery and pungent, it also contains a pinch of sulfur which smokes are poisonously. All children and animals and other entities should leave the room before you start. While you are cleaning the room, hold a towel in front of your nose, to protect yourself from the smoke and from tickle in your throat. 
 
Work fast and effective. You need only a fourth or a half Teaspoon for a room with ten m². Leave the room as soon as it is full of density clouds of smoke and wait about 20 Minutes until you enter the room again. No ghost respectively demon will stay in this room, if he is not totally nuts. Normally they escape of the windows in the rooms while you are already burning the incense. The soft smell of sulfur will stay in your rooms for about three days, and protects you so from entities who want to come back to you.

Ingredients:

Siam benzoin, black frankincense, a pinch of sulfur, various herbs and spices.