I almost always have great experiences with everything I buy from Specialized, so I was pretty bummed to have a not-so-great experience with this Sealant. I've been running another sealant brand for many years without issue, but thought I'd give this is a try. The Good: Install was easy for both sets of tires seating and sealing without incident. The Bad: With 65psi in my Sawtooth (I'm 175lbs) I acquired a small staple that punctured the tire. The sealant did its job at first…That was, until I hit the off road section of my ride. For the next two hours, I was showered with on and off spurts of sealant, in between me putting more air in the tire to keep it inflated (pump, not Co2). Several times, I stopped, let the sealant drain to the hole, where it would temporarily seal, only to begin leaking after a few bumps. When I got home, I topped off sealant and the following day, I went for a 40 mile road ride, and by the end of the ride, my tire was flat. I confirmed there was only one puncture by holding the tire in a bucket of water. To be clear, the puncture size was very narrow (less than 6mm) and did not required the use of a tubeless repair plugger since the diameter of the plug was a lot larger than the actual puncture. Again, we're talking a staple. So, I went ahead and reinstalled the tire using my previous brand of sealant and the puncture sealed immediately and after 150 on/off road and the puncture has not leaked once, and it's holding full pressure. Take two: When I bought this sealant I also installed a set of Roubaixs 2bliss for my road bike and what I found is that it doesn't seem to seal at higher pressures (50+). There are a lot of goat heads where I live, so it's common to get punctures and while the Roubaix would stay inflated, they would stop sealing above 60psi or so. Anyway, perhaps it's an isolated incident but given how much time I've now spent replacing sealant and cleaning dried sealant off my frame, I thought I'd share my experience. Thanks