Followup: Pressure washer for weed removal...

[Zoidberg]

I remember years ago working at a Bennigan's in Metairie; the managers wanted to spruce up the building but didn't want to pay anyone to do it (cleaning or painting, etc) so they rented a gas-powered pressure washer and figured they'd spray clean the building.

Which was stucco.

Guess what happened. To give them credit, it only happened in one swath, but it was quite a swath.