Greg Eisemanwrote a review of Stan's NoTubes Tire Sealant on January 14, 2013
Familiarity: I've put it through the wringer
I've been riding tubeless for about 5 years now and the entire time using Stan's. I've ridden over goat-head bushes and the Stan's just seals up the holes (on the same ride my buddy had to walk home). Another time I took a 1/2 inch stick through my wheel and never noticed till halfway through the ride I noticed my front tire was getting low. So I stopped, aired it up, and kept going. When I got home I realized there was a stick in my wheel!! I had to replace the wheel, but was able to finish the ride. Stan's is awesome. I always carry an extra tube in case I get a blow out on a ride. Then I just pop in the new tube and keep going like normal.