Webuse safe water and raw materials. Use safe water or treat it to make it safe. Select fresh and wholesome foods. Choose foods processed for safety, such as pasteurized milk. Wash fruits and vegetables, especially if eaten raw. Webfood workers should wash their hands thoroughly with soap and water before and after handling food. This can help prevent the spread of harmful bacteria and viruses that can. Web• if you think any equipment, worktops or utensils have been touched by pests, wash and then disinfect them thoroughly to stop harmful bacteria from spreading. • if you think. Things you can do to prevent pests are: Never permit animals, including pets, in any place where food is prepared, stored or transported. Report any signs of pest.