Researchers have given placebo sugar pills to people with various illnesses, telling them they're the latest, sure-fire cure. Lo and behold, many of those people were cured, just because they BELIEVED the sugar pills were some new medical breakthrough.

Same thing with scent lock. If you believe they work, they work. If you think they're a ripoff, then they're a ripoff.

I fall into the 'ripoff' group.