I carry Vittoria Pit Stop on the road. I haven't needed it on a ride yet, but did use one at home for a pin hole leak I discovered prior to a ride. That was a month ago. Seems to be working fine. Holds air as well as new and now provide protection for future punctures. One caution to you all however: remember that the propellant in the can is CO2 (or similar). Especially if your tubulars have latex tubes (but even with butyl), you will lose pressure very quickly after the repair inflation. That is just due to the very poor barrier of latex for the CO2. After you refill a couple of times with air, the tire will hold pressure normally assuming the sealant is working.