FILE - This Tuesday, April 30, 2013, file photo, shows Dawn Ultra antibacterial soap in a kitchen in Chicago. The Food and Drug Administration says Monday, Dec. 16, 2013, there is no evidence that antibacterial chemicals used in liquid soaps and washes help prevent the spread of germs, and there is some evidence they may pose health risks. (AP Photo/Kiichiro Sato)WASHINGTON (AP) — After more than forty years of research, the U.S. government says it has found no proof that standard anti-bacterial soaps prevent the unfold of germs, and regulators want the makers of crack of Dawn, Dial and other family staples to prove that their products do not pose health dangers to customers.