As the oil evaporates or the fragrance strength is no longer acceptable, add more Diffuser Oil. If you decide to change fragrances, first let the reeds dry completely before adding a new fragrance. Some of the Reed Diffuser containers contain a re-usable cap you can use to "turn off" the fragrance throw when not in use, as well as, to flip the diffuser to re-saturate the Reeds. When returning Diffuser to upright position, give the Diffuser Oil a few minutes to drain from cap before removing. Keep Diffuser Oil away from open flames or high heat temperatures. For adult use only. Keep out of reach of children and pets. Not for use around birds. Avoid direct contact with eyes. Not for ingestion. Do not over soak or over pour to the point of dripping and overflow. Handle with care to prevent spills, as Diffuser Oil may damage or stain furniture, some fabrics, automobile dash and some plastics. Some hard surfaces may become damp or slippery.