Pram outlets sell charged ‘slime’ canisters (goes in the tube – different make up to STan’s) and tyre liners for Phil&teds etc.. Can approach 40quid for full set though..
Worked pretty well for us a while ago but still a bit of a lash up. Did cut the incident rate by 90% (3 a month to 2 a year!) on a pretty heavily (and heavy on it’s tyres) used 2up Phil and Ted
– then 1 of the 2 started refusing entry and a Bugaboo with solid tyres came along..
– Then a Mclaren came along (everyone gets one eventually!)
PS I also found over pumping the tyres was part of my problem – in the handbook the PSI is much lower than I would have realised..