Yesterday I did my good deed for the day.
When I got to our local BW trail it was threatening to rain, but I wanted to get my 20 miles in. I felt good, filled my tires, and even had my tunes. I hit the trail and soon was in a groove. I passed an older gentleman riding west. A few miles down the road I heard (over my tunes) the clap of thunder. Well I donít mind riding in the rain, but lightning scares the begebers out of me, so I did a U turn, and headed back to the car. I was about two miles out, when the guy I passed was walking his bike back to the trailhead. I asked him if he was OK, and he showed me he had a flat. He had no tools, and I couldnít just keep going, so I pulled and patched his tube, and got him on his way. I then put it on high, and got to the car. I had the bike on the top, and was telling my wife I was on my way home when he got to his car. So we both made it back to our cars dry. He was very happy that I stopped, and wanted to pay for the patch. I told him to take the money and get a saddle tool kit and patches of his own. It was the first time I used glueless patches, and I told him if it was me I would replace the tube. Those patches are VERY nice in a squeeze, and I will for sure keep them in my kit.
Anyhow for my question, what is the shelf life of unused patches? Should I periodically replace them?