This No-Spill Gas Can has a push button spout that almost completely eliminates spilling gas when you fill a small fuel tank on a lawn mower or weed whacker. The first time I tried it, I filled a chain saw to exactly the spot I wanted. Since most chain saws have small and oddly-shaped tanks, I was really impressed.
Most gas cans have an unreliable separate vent cap that you have to remember to open and close, and even worse, a leaky main cap that lets the gas vapor escape when you leave it in the sun and the tank can’t hold the pressure. The No-Spill can has a single push button that controls both pouring and venting, and the only thing to remember is to push the button with the can level to relieve the pressure. (And don’t make the mistake I did, and look into the nozzle, because you get a puff of gas fumes in your eyes. I’m lucky I wear glasses.)
No-Spill also has a line of fuel cans that meet CARB (California Air Resources Board) requirements, and that are required in many states. I live in Ohio, and had never even heard of this requirement, though I’m aware that gas cans pressurize in the sun, and I make sure to keep them in the shade.