Yes, washing dishes can effectively kill germs and bacteria when done properly. Washing dishes involves using hot water, soap or detergent, and physical scrubbing, all of which contribute to eliminating harmful microorganisms. Here's how each step in the dishwashing process helps kill germs:
Hot water: Hot water is a key element in dishwashing as it helps to kill bacteria and other pathogens. Water at temperatures above 140°F (60°C) is considered effective at killing most bacteria and viruses. Many dishwashers have a high-temperature wash cycle that reaches these temperatures.
Soap or detergent: Dish soaps and detergents contain surfactants that help break down grease, oils, and food particles. These surfactants also disrupt the lipid membranes of bacteria and viruses, leading to their destruction.
Physical scrubbing: The mechanical action of scrubbing and rubbing dishes together helps to dislodge and remove bacteria and food residues. This action is particularly important for items that may have dried-on or stubborn debris.
By combining hot water, soap, and scrubbing, you create an environment that effectively reduces the number of germs and bacteria on dishes and utensils. However, it's essential to follow proper dishwashing practices to ensure optimal results:
Use hot water: When handwashing dishes, use hot water to create a sanitizing effect. Allow dishes to soak in hot, soapy water for a few minutes before scrubbing.
Use an appropriate detergent: Choose a dish soap or detergent with antibacterial properties to help ensure effective removal of germs and bacteria.
Scrub thoroughly: Use a scrub brush or sponge to clean all surfaces of the dishes, including nooks and crannies where bacteria may hide.
Rinse properly: After washing, thoroughly rinse off all soap residues to avoid ingestion of any harmful chemicals.
Allow dishes to dry: Air drying dishes is preferable, as using a clean dish towel may introduce new bacteria.
If you are using a dishwasher, it is important to load it correctly, following the manufacturer's instructions, to ensure that all items are thoroughly washed and sanitized. Additionally, consider using the dishwasher's high-temperature wash or sanitize cycle to further kill germs and bacteria.
While dishwashing is effective at removing and killing many germs and bacteria, it may not eliminate all of them. However, when combined with regular handwashing and other hygienic practices, it significantly reduces the risk of foodborne illnesses and the spread of infections.