It works for me. Last Wednesday I was wiping down my chain after a ride and I saw some green stuff on the kick-stand bracket and thought:"Oh No!" I slowly rotated the wheel to try and find the hole in the tire and found nothing. I pumped the tire up to 60# (I ride a comfort bike with big , low pressure tires, max 65# pressure) and the tire is still holding the pressure. I ride on the street and, now and then, I'll pick up something. The slime seems to take care of most of it. I haven't had to patch a tire in over a year now.