The Lavender & Chamomile scented oil fragrances by Air Wick smell really nice. They have a lavender scent that fills the entire space. I have used other brands and types of scented refills and have used every scent by Air Wick other than lavender so this was a great opportunity to try These for myself. These refills last for a few weeks if you don't have the dial turned up completely opened. The 5 pack was very convenient as I was able to place many units throughout the home. I am not really a fan of anything lavender scented, but these refills weren't as harsh on my senses as I expected. I will be trying other scents as well, I definetely recommend this product if you enjoy filling your house with lavender scents. Received free to try in exchange for my honest review. These opinions are 100% my own.