I'm always amazed when I read one of these threads. I've used those glueless patches (both Park and Slime) many times and had very little trouble with them. I never replace them when I get home, and I've had many of them last for a long time. I find that as long as you get it on there in dry weather, and take care when you put the tube back in the tire and re-inflate, it lasts as long as any other patch. Maybe I'm just lucky with them.......