"fix a flat" does it work?

Before I get hung out to dry let me say the following:

Not only did I do the searches and found some answers I have also fixed countless flats on the road including clinchers and sew ups. I ride 300-400 miles a week through the Santa Cruz mountains and I'm never without a spare tube, patch kit and inflator.

Ok, so why would I want to use a product that is guaranteed to ruin my tube just so I can get home. Well, it is called, a baby. My new cargo bike serves one major purpose, it moves me and my two grandkids all over town. If that Yuba Mundo rear tire goes flat there is no way I'm going to deal with pulling off that wheel and patching a tire and try to watch a 5yr old and 18 month old on the side of the road at the same time, or any place else.

So, I'm willing to sacrifice a tube to the slime gods and make it home rather than walk mucho miles pushing a flatted cargo bike with two kids aboard.

Anybody here used the stuff and did it work? Other than not getting a lot of pressure in the tire, I can add more air easily enough on the side of the road.

I'm also going to do the logical flat prevention kinda stuff, better tires and tubes, such as the Marathon plus.

The kid getter