“Forget Fix-a-Flat. Not reliable. Get plugs and a GOOD compressor.”
Agree...I finally learned how to plug a tire after decades of ‘bringing flats in’ for repairs. Despite what many claim, if you plug a tire correctly (and it’s not on a sidewall), they last forever.
Now I have kits with an air pump, plugs, and tools. Used them a few times, but just at my house, and they worked fine.
...and no, I don’t even go off-road, just like to be able to do repairs rather than rely on others.
A few years ago I bought a kit then had a run of flat tires. I used all the plugs within 3 weeks on my car and a friends.