 Targeted hygiene is based on identifying the routes of pathogen spread in the home and introducing hygiene practices at critical times to break the chain of infection.The main sources of infection in the home are people (who are carriers or are infected), foods (particularly raw foods) and water, and domestic animals (in the U.S. more than 50% of homes have one or more pets).Sites that accumulate stagnant water—such as sinks, toilets, waste pipes, cleaning tools, face cloths, etc.