Febreze NOTICEables refill. Unlike other electric fresheners, it actually eliminates odors from the air. While you may get used to the others, you'll actually notice NOTICEables. That's because NOTICEables oil warmer alternates between 2 scents all day. Refer to SKU 622516 for Febreze NOTICEables warmer. Size: 0.879 oz.