What problem are you trying to solve? The purpose of gas line antifreeze is to disperse water in fuel, but if you buy your gas from a reputable dealer and keep the gas cap closed, you shouldn't get water in your fuel.
A lot of people used to put gas line antifreeze in their fuel in the mistaken belief it would prevent carburetor icing. It won't, because carb ice is caused by water in the air freezing in the venturi, and gas line antifreeze will never prevent that. Carb ice is a thing of the past now, of course.