Have it in the tubes of three ebikes, no flats, they never even lose any air pressure. One bike's tube air pressure has remained the same for over 3 years now. Use a valvecore removal tool, squirt it in the tube or tire and then replace the core, reinflate and your are good to go. My older ebike with the front hub motor got a nail through part of the sidewall a year back and it sealed asap. Still on the same tire and tube, didn't even have to bike pump it and that was almost a two inch nail for wood. Without Tireject in there, I would have had a 6 mile walk on bad feet and knees.
Now, on my old etrike, the tires with the green stuff went bad every now and then, one killed by a 1 inch nail in a bike lane. That nail was about an 1/32 inch in width. The green stuff didn't plug it. Try walking an downed 100 pound trike almost a mile.