Bought gas lately? Then you’re supporting BP.

It’s next to impossible to boycott BP. It’s also easy.

As reported in The New York Times, national calls for boycotts of BP stations are relatively ineffectual: BP sold it’s last filling station a few years back. You may be preventing a few cents from entering BP’s wallet, but that’s all.

And if you fill up at a rival station, you may be giving 80 cents on the dollar to BP—it’s their gas, oftentimes, even if not labeled.

So how to hurt BP?

Drive less.