I've used one. It was fine. I won't buy it again because it's not worth the money but if you have some cans... go for it. You'll be putting up a lot of scent. which is the intent. I sprayed it on a clean rag (soaked the rag) and hung the rag in a tree. I like hanging a scent ball better. But if you use a scent ball, hang it between trees with a chain or cable or the bears will take it down and eat it.