Big believer. I've used mine all sorts of ways. The best way is leave on high for 10 days suspended from the tuner keys via a shoelace in the closet. I usually do it when I go on vacation so no one has to hear the low hum. It's never done any harm and its really helped a few tighter feeling guitars. Plus I think I paid $130 new and they usually sell in a day here for about $100 so it costs a net $30.
