I read that too. They also said that deer have better sense of smell than dogs do. I have ran dogs in trials. I was told that when someone makes a pot of stew a human smells stew. A dog smells a potato, carrots, celery. That is why you can't fool a dogs nose. In my opinion you can't fool a deer or elk. I play the wind and try to be in the right place. I don't waste money on scents or cloths that reduce scent. Ron