I have had to use my spare twice and once on my father's van. I had my first flat in high school. I went out to my car after class to go to work and found the tire completely flat,so I got a ride out to an auto parts place and bought a $5 can of Fix a flat. When I got back to the car, I realized there was a hole in the sidewall and fix a flat was worthless against that, so that can has been in my trunk with a tripod LED lamp incase I need it.

So OP, you paid $20 for that kit when you could have got basically the same thing (Fix a flat) for $5?