I've followed all the proper steps, but my tires end up being flat the next morning.

I inspect the inside and outside of the tire and hub for any debis that might re-puncture the tube

I inflate the tube and inspect it under water in my sink and locate the puncture. Typically its the snake bite type.

I dry the tube then buff the area with the sandpaper to create the ideal surface for the adhesive

I apply the patch, press it down with my fingers with a lot of force, for much longer than advised

I wait 15 minutes, and put the tire back and pump it up. And then it slowly goes flat again.

This has happened with 2 different brands of patches. My current ones are these:




I've even used a pair of plyers with cloth to protect the tube, to make sure enough pressure is used to make it stick.

Any other tips to try? What kind of patch kits do you guys use?