Some of the more expensive scents have a date on them or will say something like “bottled for use in the 2005 season”. I drag a rag scented with doe estrus scent next to me every time I walk into my stand. Last year I had two bucks follow my trail right to my stand one night, nose to the ground the whole way. I just finished a meal from one of them a few minutes ago. The stuff works!
Here he is:
