Originally Posted by robo
I carry a few alcohol prep wipes (the kind people use to sterilize skin before an injection), and first wipe the tube with that to clean off any grease or talc, then rough the tube, clean it again, and then apply the patch.
Whether you use glueless or glued, this is a great method. Those alcohol wipes are cheap, can be found in any drug store, take up just about no room in your saddle bag, and make a world of difference in how permenant the patch becomes. Robo's method is right on an I have used it successfully many times with road tubes in the 100-120psi range and never had a failure. I have to agree with the people who are saying that if the glueless patches are failing you, then you're just not using them properly.
The key is getting the area clean and roughed up properly - for either type of patch.