The innovative pouch is designed with a unique spout feature that ensures a smooth and controlled pour, eliminating spills and wastage. We also include with the refill a brand new set of reeds. They do become saturated over time and can eventually clog, so we do recommend replacing them to ensure your diffuser continues to release your premium fragrance effectively. Remembering to protect your surfaces, simply pour the fragranced oil into your glass bottle, insert your reeds and allow up to 48hrs for them to diffuse.