YES!
Uh, wait. Make that No.
They are actually worse than useless. They will in my opinion more often that not actually be worse than using nothing and will do more harm than good.
Been hunting deer longer than half the folks using this forum have been alive. Never, nada, not once in all those years have I personally witnessed a positive experience of any kind of scent use. A buncha times I've seen negative experiences. Most times I've just not seen a deer at all when scent products were in use so have no way of knowing if the product hurt or just didn't help.
I refuse to use any type at all anymore.