Yes , I do. Works pretty well. It looks like a piece of white pool chalk with a brown dot on the side. I was told to put a drop of super glue on a striker tip , then twist the striker like a pool cue into the brown spot. Blow the loose dust off and it's done. It does work. I tried it on a couple of old strikers and put some water on the surface of a couple of pot calls. Worked great. My only thought though is if you attempt to use the striker in the rain , it will still act like a wick and soak up water. It runs well on calls that are not conditioned good also. I use it on box calls , not to try to waterproof them , but because it runs them well. Imo it works as advertised.
