THANK YOU and THANK YOU a 1000 times...We had two (2) tires that have aggravated us for years. Every time we went to use either our riding mower or wheel barrel. The tires were flat. Short of getting a tube installed in both of them. We saw your product online and thought to give it a try. With your guarantee we tried it. It is FANTASTIC. Works better than expected. We can't THANK YOU enough. Keep on keeping on. Have a blessed day. You blessed ours!