Glade Electric Scented Oil Holder & Refill Pure Clean Linen is a plug-in air freshener system that releases a long-lasting, clean linen scent throughout your home. The electric holder warms up the scented oil refill, gently diffusing the fragrance for up to 100 days on low setting. With its adjustable fragrance intensity control, you can customize the strength of the scent to your preference. Glade uses a TrueScent Technology™, a proprietary blend of ingredients that provides a lasting feeling of clean. Discover Glade Plugin which has fragrance infused with essential oils made without phthalates, parabens, formaldehydes. Glade air freshener dispenser has five adjustable levels of fragrance release and Ceramic Heating Technology.