Hillhouse Natural Diffusers Hillhouse Naturals is a family owned business that began in 1986. They pride themselves in manufacturing quality fragranced products for the home. Create your own unique setting for every room of the home or office with Hillhouse Naturals fine fragrances. Simply place the diffuser reeds into the oil and let the wonderful aroma fill your environment. The diffuser reeds release fragrance into the air by allowing the highly concentrated perfumed liquid to seep up through the reeds and evaporate.   $39.95