Better Homes & Gardens 24 ml Fragrance oil bottles are for use in a fragrance oil decorative plug in diffuser. Simply twist off the cap and match with your favorite Better Homes & Gardens or Mainstays fragrance oil diffuser, plug in, and it will instantly start releasing a soothing fragrant scent into the air. They are ideal for creating a warm and welcoming environment in your home. Customize each individual room with a unique fragrance and decorative fragrance oil diffuser. Enjoy weeks and weeks of long-lasting fragrance. (Fragrance Oil Diffuser Sold Separately)