With all this said...I have personal experience with SVL tech support and it is excellent. I know a lot of people are hesitant about calling for help because they think support is usually worthless or they will be on hold for hours. Not true in this case.

Also, I too believe the leeches don't last quite long enough, but I do know they are better (quieter) on MY bow than whiskers. The only thing I disagree with svltech on is to use whiskers up until you go hunting. Again on MY, bow whiskers were killing about 10 fps (maybe I had them too fluffy) but leeches are killing about 2 fps. Call me paranoid, but I just didn't like the difference in fps while practicing. So I go without any string silencers up until hunting, then slap on a couple leeches before hunting season (then check my groups at distances) and go with them until they fail or I swap out my string the following year. I might be a little noisier praticing than the guy shooting next to me at the range, but what do I care what he/she thinks. As soon as I put the leeches on for hunting, I make less noise than they do, and this is where it counts. I buy a couple of sets each year, so I pay less than $20 and this lasts me through the hunting season, plus some extra just in case. In my immature opinion, I believe it is worth it. All my SVL stuff has worked well for me.

And no, I don't work for SVL, but if they want me too...