From the experiences my friends have that chew, it has never been a problem. IMO, deer are more curious about smells than they are spooked by them(except human and predator, of course). My dad actually busted a whole bottle of fox urine scent-cover while climbing into his tree stand. The whole bottom half of the tree was covered in it. They always say that too much of the stuff can spook deer. Well, later that day, he had 3 does, right under him, just standing there sniffing the tree.