my opnion on scents is when you chew something mint to cover up garlic odor. you think your doing something but most of your friends will simply just smell mint and garlic together. the same with deer cover scents. i believe they can detect that the cover pine scent in the bottle isint the same as local pines. if drug dogs can detect these subtle differences i think a deer can do the same.in other words if you use skunk cover scent i think a deer just smells human mixed with skunk scent. i say no scent is the best scent and you should always hunt with the wind in your favor.