Risa, In my mail today no less was a packet on none other than Predator's Urine from Leg Up Enterprises of Maine. Their address is www.predatorpee.com. I didn't make this up! According to them Wolf urine keeps deer, moose, mule deer, and bear away. Seems it lasts depending on method of application 10 days to 30 days. Hope this helps. Mary-Anne