Neglecting to clean these areas can have a significant impact on overall health. For example, dirty faucet heads can harbor mold and bacteria, which can contaminate the water you use for various purposes like cooking and brushing your teeth. A dirty dishwasher filter can lead to poorly cleaned dishes, potentially leaving behind harmful bacteria that could cause foodborne illnesses. Dusty door and window frames not only contribute to poor indoor air quality but also provide breeding grounds for allergens that can exacerbate respiratory issues. Unclean lightbulbs may reduce the amount of light they emit due to dust accumulation, affecting visibility in the home.