With scents, there are actually 3 different catagories that get lumped together by most - they ARE different. None are needed, but 2 of them can have an effect, but 1 can never work.

1. Scent reducers - these can help to reduce your scent.
2. Attractrant/curiosity - things like vanilla and other deer pees. Deer do smell them and react in different ways.
3. Covers scents - Earth wafers, pine smell, skunk, different animal pees, etc designed to cover and hide your scent. A deers olfactory sense allows it to process multiple smells equally at the same time. IT IS IMPOSSIBLE to cover one scent (ours) with another one. Deer simply smell you AND whatever else you add to the mix - no hiding or fooling them a bit.