I stopped using them given the cost and their lack of durability, at least on my bow. I found that cat whiskers tied into the string and then cut to half dollar size bleed only 3-5 fps and they last forever. For the 12 bucks I save on cats vs leeches, I can't see going back for the sake of 1 or 2 fps.

Sims new limbsavers on the other hand......now they're worth the money IMO.

I'm told that the Patriot is quieter than the arrow now, so between the limbsavers and the cats they collectively do the job.