I’ve been using STANS for at least 4 years and never had a single problem, seals nail holes and the blackthorns round here make riding with a tube in lengthy, expensive and tedious. That said the last bottle I bought will not seal the tyre on the rim AND the tyre has blown clean off the rim twice? The first time was on the ARD ROCK The other week, made a hell of bang, second time “Yesterday” monitoring it as I was pootling along I felt the back end jack up as the tyre went rock hard, i got off and felt the tyre and it was warm? As I was stood there admiring the week old Latex stuck all over the frame it decided to blow itself clean off the rim again.
Not impressed BUT I did buy it cheap or at a reduced rate so I maybe should look see if there is a use by date on it?