Free grazing was a thing in the USA until the invention of barbed wire. If you can't avoid free riders because costs of doing it are too high, you'll have to be

Free grazing was a thing in the USA until the invention of barbed wire. If you can't avoid free riders because costs of doing it are too high, you'll have to bear with them, at least until you find a cost efficient solution. Don't ask for others to subsidize you (i.e. making people who doesn't benefit from the smell pay for it).