Kitchen cleaning : Keeping the kitchen clean is one of the best ways to prevent the spread of foodborne illnesses. Countertops are one of the top areas of concern, as preparing contaminated foods on the counters makes it possible for infectious organisms to contaminate other foods. Bathroom cleaning :Remove all the items that don't belong in your bathroom. Take out everything that doesn't belong, such as clothes, cups, and trash. Also move out any little side tables or movable storage cabinets so that you can clean under them.