Tube repair patch.
I ran out of tube repair patches so went to local W Mart, all they had were Scabs! Didn’t want but Sunday local bike shop closed!
Had a flat today, used a Scab to fix and on my way, less than a mile later, tire is flat again! Removed tube, checked the new Scab and there’s the leak! Put in my spare tube and got home fine. Going to bike shop for old fashioned repair kit and Scabs go in the trash! Sometimes the old way is the best!