Yeah, perfume fades but the oil stays on there indefinitely; I put it on a bandanna and put it under my pillow, and then pull it out later in the night. You could use oil that is for cooking, like the sassafras I had, or the other kind that is for perfume or light bulbs or whatever. I was thinking about vanilla extract and I might try that. It is alcohol based tho so it will probably fade.

PS: I had an LD the other night; actually I attributed it to chocolate but I had my scent-cloth too...maybe it was the combination I don't know.