if you put a drop behind each ear, you should get another year out of it !!!!!! It probaly is not worth useing. Piss breaks down into amonia and Special Golden Estrus has "other" secretions that should have totaly broke down. I doubt it would spook a deer, but I also doubt it be very effective on a rutting buck. I have had good success with that product myself and prefer it to the others I have tried on the market. Seems much more effective then the tinks products and the like, . DFA