No Shit!

It has been reported that US scientists have developed a mega-slippery spray for toilet pans that might well lead to the disappearance of the toilet brush (https://www.theguardian.com/science/2019/nov/18/scientists-develop-slippery-toilet-coating-stop-poo-sticking). More importantly, the spray which has to be periodically re-applied, should greatly reduce the amount of water needed for flushing. This is important, as enormous quantities of this scarce resource for used for this purpose. I presume that they will test that the material sprayed does not create any environmental problems?