From my experience, my scent blocker suit really works. Since I've worn it, i've never had a deer wind me no matter what the wind. Again, this is my experience. My garments can be 'recharged' by washing them, while others are done by drying them. I believe the lifespan is 10 years if i'm not mistaken. The only downside I see is they are pretty spendy. I'm sure some of the old timers will contradict this but what the hey