I just refill the tire, and let the slime work. 99% of the time, this works, and I later have the LBS mount a new tire or tube, whatever is necessary.
Twice, in 16 years, I had blowouts, that the slime wouldn't seal. I walked home once, and another time, I had my wife pick me up. In these instances, a tube or patch probably wouldn't have helped anyway.
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Jim
Make a BOLD Statement While Cycling!