 Man, it depends on how bad it is. You get it from your sprinkler system. If your sprinklers are not directed in the right direction and it lies on the concrete, it could be as many as a couple of months. Sure. Wow. So a couple times a year at most for some folks. And the same thing with the light poles. Can you help those out, too? Because I know they get that brown tint from the water. Is it the same thing as the concrete? Absolutely. It'll take it off siding. It'll take it off brick. It'll take it to any surface. Okay.