If your reed diffuser is running low then this is the best option to top up without having to buy a whole new set. You can purchase 100ml or 150ml bottle.
Reed diffusers are an alternative way to freshen up your house without lighting a candle! The 100ml refill bottles should last around 2-3 months with the turning of your reeds often. These bottles come with a child proof screw lid aswell for safety.
Please note heat will make your reeds soak up the liquid quicker.