Cleaning removes germs, dirt, and impurities from surfaces to lower the amount of germs and reduce the risk of spreading infection. The cleaning process involves the use of using soap and water to physically reduce the number of germs from surfaces but does not kill the germs. Sanitizing lowers the number of germs on surfaces or objects to a safe level, and is most effective when done after the surfaces have been cleaned with soap and water. This process involves either cleaning or disinfecting the surfaces to effectively lower the risk of spreading infection. Disinfecting kills germs. Disinfecting works by applying chemicals, using an electrostatic sprayer or cloth, to kill germs on surfaces or objects. The disinfection chemicals works best when done after the surfaces have been cleaned as it does not remove impurities but very effective for killing germs.