I really enjoy these Air Wick Scented Oil Air Freshener refills in Lavender & Chamomile scent. The scent is very lovely and lasts longer than most other scented oil brands I've tried. I like using them to help freshen up our bathrooms and laundry room since that's where I keep our litter box and they seem to do a nice job keeping the rooms smelling pleasant. This 5 pack is especially nice because I have extra refills available when one runs out or if I want to spread them around the house. I think these definitely work better for smaller to medium sized rooms, but if you have a larger room you could always use a couple in different corners if you wanted to.