Pretty but not functional for scent
The smell that comes with them is horrible to me. I did not buy them for the scent quality. I only use them t o.k decorate my trick in sunflowers. They do not work well for diffusing scent. I find them very attractive. They are soft and rubber. Attached to a plastic base with what looks like a double sided tape. They come with a metal clip enveloped with a rubber coating. They stay in the vent very well.
Rating: 5 stars