I have and use both. From my personal experience, scent blocker, works better. I had a doe at 5-6 yards directly down wind of me while wearing scent blocker. She knew in her mind that someone had been there at one time as she was a bit nervous but, I think the scent was so faint that she took a few more steps enabling me to have fresh backstraps for supper that night. I can't honestly say I have the same results with scentlok.