One of the worst stories I've heard locally was from a guy who while working in the office, had the employee call in because there was a dispute over pricing as he was about the start a job. The boss was maybe in a bad mood or something and thought the employee should have been able to resolve the issue without having to call. So he tells the employee to bring the truck back and by the way you're fired. The employee tells the customer that because of the price dispute, the cleaning is now free. He takes the Hydroforce and sprays everything in the house. Walls, electronics, books, pictures, everything he can see. Puts down the sprayer and walks away, leaving the truck running. Over $10,000 damage.