If you love reed diffusers, then these are a must. TIP: If liquid remains after 6 months, then you need to replace your reed sticks. The reeds act like a sponge, drawing up the liquid & allowing the fragrance to disperse. Old reeds become saturated, so the diffuser becomes "stagnant." Replacing with new reeds will reactivate the liquid, dispersing it throughout the room giving you value for money. Each bundle has 10 reeds. 300mm long. Can be cut to suit shorter bottles.