I've seen them in two McDonald's restaurants. As soon as I rise from the throne, they flush automatically and forcefully. The problem is, I tidy myself up while standing (doesn't everyone?) and so I have to then manually flush a second time. How much water does that waste? I know I've read that in California, at least for residences, they mandate low water usage toilets and that has led to a black market in toilets that "work". Does California ban these HydroVantage toilets, or do they exempt restaurants?