Our fragrance diffuser brings home the clean, refreshing, energizing aroma of grapefruit with a hint of natural orange. Just place the natural reeds in the glass bottle to draw the pure essential oils into the air, scenting the room with a light, refreshing aroma. Glass diffuser bottle. Scented oil: 4.5 fl oz. each. 12 reeds each. Will release scent for up to 2 months.