I have tried the other "environmentally sound" latex products; none work. This works. They did go more environmental but it still works but you will have to fill up your mtn bike tires 2-3 times a season rather than the 1 time a season with the older less environmental products. But this works when you get a nick, pinch, goat head, etc. The other brand I tried from Italy just shot out the tire until it was flat. Never again!