How to utilize a wand or stick of sage:                 
The first rule is this: once the sage is  lit, you do not stop it from burning. The spirit of the sage knows just  how much negativity or positive ions are around and it will burn  accordingly. When the ions have been neutralized, it will cease burning  on its own. You can tell how 'bad' it is by the quality of the smoke the  smudge stick emits: thin, light smoke indicates the place or person is  fairly clean. Thick, rolling white smoke means the place or person has a  lot of positive ions or negativity around them and it needs this  thicker smoke to deal with it. If you are done smudging, then set the  bowl on your electric or gas stove and let it burn itself out until it  is done. Under no circumstances are you to put it under water to douse  the smoke or do something to stop it from burning. The spirit of the  wand knows what is needed, and where. If you watch the smoke, you will  see it drift to a particular part of the room, car, or person because  that is where the healing/catalyzation of energy needs to be done and  accomplished.
1. Always have a heat proof bowl to put  the sage in, after it has been ignited. We use an abalone shell; but any  piece of thick, fired pottery (or even a Pyrex bowl) will do. If you  are using a bowl, you may well want an oven mitten on you hand to  prevent burns because sage burns HOT. It is the spiritual nature of it  to do so. Do not use a container that is not bake or tempered for high  heat--it will crack it and it could cause a fire. Do not use anything  metal, because heat is conductive and you will get burned.
2. Be safe. Do not have doors or windows  or a fan on when you "smudge" yourself, a room or your house. It can  blow sparks out of the bowl and onto the floor or surrounding area.  Don't be wearing billowy, long-sleeved blouse or shirt when you fan the  smoke. Don't have long hair draped down near the bowl with the smudge  stick being held in it. Be common sensed about this.
3. Light the sage with a match at the  very tips of the leaves on top of the wand. Once they flame to life,  then blow them out quickly. We use a feather fan to do this, but you can  use a piece of stout paper or even cardboard or a paper fan. It's  important to NOT let it blame and burn. Once it is lit, and the flame is  blown out, it will smoke thinly or thickly, afterward. The catalyzation  comes with the smoke, not the flame.
4. Place the lit, smoking top of the  wand of sage deep down inside the bowl and steady the rest of it, on the  stick portion at the other end, with your other hand.
 SMUDGING A ROOM
Keep the windows and doors closed to the  room you have chosen to smudge. You can take a fan or a small piece of  cardboard and start in one corner of your room, and gently waft the  smoke after it clears the bowl, from the floor, up, toward the ceiling.  Do this in a clockwise circle in each corner of your room. When you are  done with the fourth corner, move to the center of the room, raise the  bowl chest high and waft smoke up toward the center of the room. You are  now done. When you leave the room, shut the door behind you. When you  go back in an hour later; you'll see that the room feels better and is  even "lighter" appearing to your eyes than before.
 SMUDGING A HOUSE
If you are doing a complete house, then  do each room in this fashion. Do not miss a room. Get all of them. If  you want only one room done, then close the door behind you and smudge  the room--and leave the smoke in that room--do not open windows or doors  to let it out. It will dissipate surprisingly swiftly. You can also  smudge your garage and basement in the same, above manner. Just make  sure the garage door is closed and that the door leading to the basement  is closed while smudging and closed after you depart from it.