Great for any space that needs a low maintenance fragrance blast. Our diffusers are small terra-cotta pots with cork tops and a leather string for hanging in autos, closets or any where. Terra cotta diffusers are inexpensive, easy to use and do not require electricity or batteries. Just add a few drops to a 1/4 oz of fragrance and the oil will permeate through the pot and diffuse out into the room. The intensity of the aroma depends on how much oil is added to the clay pot. Adding too much oil may cause the pot to sweat the oil out over time. DIFFUSERS ARE WHITE ONLY. Simply add candle dye to the mixture to get cool colors.