I was tired of having such a hard time starting my lawn equipment and snow blower after they had been sitting all year without being started. My brother told me that I should try Sta-Bil. He said that it would keep the gas in the cans and tanks fresh, so I gave it a try. I must say it is an excellent product. You only use about an ounce or less per gallon of gas. The top of the bottle actually has a measuring spout built into it, so you get the exact amount every time. I put it in both of my gas cans and in my snow blower, lawn mower, weed wacker, and air blower. It keeps out moisture and also keeps the gas from getting stale. So, with the snow blower for instance, I can let it sit all year round with Sta-Bil in it and when I go to start it again in the Winter, it starts up like I was running it a few days ago. One little bottle will last you for years. I think I've had my bottle for over 3 years now and it's still 1/2 full. I was having some running issues with my snow blower this year and I added a little bit of Sta-Bil and it started running good again. I think I got some snow in the tank, because the gas cap vibrated off the snow blower. But once I put the Sta-Bil in, it was as good as new. I would recommend this product to everyone.