I have several of these charcoal odor absorbers throughout my house and even in my cars. This is the first one I've owned from Opul. They are all pretty good, and this is just like the rest of em. It helps keep some of the moisture out of the area. I think these are best when used in smaller areas. You won't really notice it in larger open spaces. I set this one up in my closet. It would also be great in a coat closet when you might put damp coats and boots.