Reed diffusers are a great way to keep a room scented 24 hours a day - even when you are not home. The set comes complete with a glass teardrop vase, 14 bamboo reeds and 4 oz of your fragrance of choice and instruction card. We suggest you start with half the bottle of oil poured into the vase and half the reeds inserted into the vase. Let the reeds soak for 24 hours and then flip them over. If you would like the fragrance stronger, add the rest of the oil and the rest of the reeds. To maintain the aroma, flip the reeds every few days. Lasts up to 4 months.