Domestos is the world’s number one disinfectant designed to kill germs and bacteria in high traffic areas such as the kitchen and bathroom. diluted Domestos can be used to sanitise floors and bins in areas such as the kitchen – helping you to learn how to prevent bacteria and germs from spreading in the kitchen. Domestos bleach contains chemicals called oxidative agents. When these agents come into contact with germs or stains, they cause oxidation which kills germs.