1. Washing may offer a sense of security by personally ensuring that any residual dirt or germs potentially picked up during transportation or handling are removed. This could be particularly important if the eggs were purchased from a source that doesn’t adhere to strict cleaning protocols, such as a local farmer’s market or backyard coop.
2. Contrarily, washing eggs could inadvertently introduce water inside the shell through microscopic pores, which can facilitate the movement of bacteria from the surface into the egg itself. Moisture can be an ideal breeding ground for bacteria, thus by washing, you might actually be increasing the risk of contamination rather than lowering it.
3. In the argument against washing, eggs have a protective barrier which is designed to shield against bacteria. Over-washing can remove this natural defense, potentially making the eggs more susceptible to bacterial penetration.
Recommendations from Food Safety Experts
Considering these factors, food safety authorities typically advise the following:
1. There is no need to wash commercially purchased eggs that have already been washed and sanitized, as it may do more harm than good. The cleaning process at the plant, along with the protective coating applied, should suffice to keep the eggs safe until their use.
2. If you come across a visibly dirty egg, instead of washing it, you can gently rub off any debris with a dry cloth or sandpaper. This action reduces the chances of pushing bacteria through the pores of the shell.
3. Always purchase eggs from a reputable source. This ensures that the eggs have undergone the required sanitation processes mandated in your region.
4. Practice good kitchen hygiene by washing your hands with soap and water after handling eggs, or any other potential sources of contamination. Also, ensure to cook eggs to an appropriate temperature to further eliminate the risk of bacterial infection.

It is always important to consider local guidelines and regulations when making decisions about food safety. In the case of eggs, following recommended practices from credible food safety organizations usually provides ample protection from foodborne illnesses without the need for additional washing at home.