I totaly agree with Kevin1 and GregH.
My worst season ever, I'm pretty sure was because I thought I had a good handle on scent control, and was overly confident. I was using scent killer on my clothes. and had a new scent lock suit - man I was ready! (You do realize reactivating your scent lock in the dryer means making them smell like your fresh laundry!)
I usuallyhung my old clothesout side, or when it is raining in a trashbag with leaves and dirt, and play the wind. I'm pretty sure they can totally smell the scent killer sprays, and I know the wind is the trick. Wind not in your favor, change locations!