You bring home a carton of eggs, place a frying pan on the stove, and get ready to make breakfast. But before cracking those eggs, a familiar question comes to mind: Should you wash them first?
For some people, rinsing eggs under running water is a normal kitchen habit. After all, eggs come from chickens, and their shells might carry dirt or bacteria. Washing them seems like a sensible way to keep things clean.
However, food safety experts say this well-meaning habit could actually create problems.
According to the U.S. Department of Agriculture (USDA), washing commercially packaged eggs at home is unnecessary and may increase contamination risk. Here’s why experts recommend skipping the rinse and what you should do instead.
Why Washing Eggs Isn’t Recommended
It might seem strange that washing something could make it less safe. However, eggs aren’t quite like fruits and vegetables.
Eggshells contain thousands of tiny pores. These openings allow gases to move through the shell, but they can also provide a pathway for unwanted bacteria.
The USDA explains that washing eggs incorrectly can cause water to move through these pores, potentially carrying bacteria into the egg.
This becomes especially concerning when the washing water is colder than the egg itself.
So, although rinsing an egg might remove visible dirt, it doesn’t necessarily make the egg safer to eat.
The USDA specifically advises consumers not to wash commercially packaged eggs before using them.
Aren’t Store-Bought Eggs Already Washed?
Yes, and that’s one reason you can skip washing them at home.
In the United States, commercially processed eggs sold in grocery stores generally go through a controlled washing and sanitizing process before reaching shoppers.
During processing, facilities use carefully regulated water temperatures and approved cleaning agents to reduce contamination.
This process is different from holding an egg under an ordinary kitchen faucet.
Commercial washing is designed to clean the shell without allowing wash water to move inside.
Once the eggs have been processed, packaged, and refrigerated, washing them again at home doesn’t provide an additional benefit.
In fact, the USDA says that doing so may introduce contamination that the original cleaning process was designed to prevent.
What About the Egg’s Natural Protective Coating?
Freshly laid eggs have a natural protective layer commonly called the bloom or cuticle.
This coating helps protect the shell by reducing the movement of moisture and microorganisms through its pores.
When commercial eggs are washed, much of this protective layer is removed.
That’s one reason refrigeration plays such an important role in the American egg supply system.
Once eggs have been commercially washed and refrigerated, keep them refrigerated until you’re ready to use them.
The USDA recommends keeping eggs in their original carton in the refrigerator rather than leaving them sitting on the kitchen counter.
Should You Wash Fresh Eggs From Backyard Chickens?
This is where the answer becomes a little more complicated.
Fresh eggs collected from backyard chickens may not have undergone the same commercial cleaning process as grocery-store eggs.
Some may have feathers, dirt, or other material stuck to the shell.
According to the Centers for Disease Control and Prevention (CDC), backyard chicken owners should collect eggs frequently and carefully remove dirt or debris using a brush, cloth, or fine sandpaper.
The CDC also warns against washing warm, freshly laid eggs with cold water because bacteria may be drawn through the shell.
The best approach is to keep nesting areas clean, collect eggs regularly, and refrigerate them promptly.
If an egg is heavily soiled or cracked, discard it rather than assume a quick rinse will fix it.
Can Washing Eggs Remove Salmonella?
One of the biggest reasons people wash eggs is concern about Salmonella.
Salmonella is a type of bacteria that can cause foodborne illness. It may be present on an eggshell, but contamination can also occur inside an egg before the shell forms.
That means washing the outside doesn’t guarantee the egg is free of bacteria.
The FDA recommends cooking eggs until both the whites and yolks are firm. Egg dishes such as casseroles should reach an internal temperature of 160°F.
For recipes that require raw or lightly cooked eggs, pasteurized eggs or egg products are the safer choice.
Proper cooking and careful handling offer more reliable protection than rinsing eggs in the sink.
What Should You Do if an Egg Looks Dirty?
Imagine opening your egg carton and noticing a small spot of dirt on one shell.
Your first instinct might be to rinse it, but the USDA offers another option.
For an egg that needs minor cleaning, the agency recommends gently wiping the shell with a clean, dry cloth or disposable towel.
Avoid soaking eggs in a bowl of water or scrubbing them aggressively under a running faucet.
Also examine the shell carefully.
If an egg is cracked or leaking, discard it. Cracks can allow bacteria to enter more easily.
When buying eggs, choose cartons containing clean, uncracked shells whenever possible.
The Kitchen Habits That Matter More Than Washing Eggs
Instead of concentrating on rinsing eggs, food safety experts recommend paying attention to how you store, handle, and prepare them.
A few everyday habits can make a meaningful difference.
- Refrigerate eggs promptly. The FDA recommends storing eggs at 40°F or below.
- Keep them in their original carton. This helps protect eggs during storage.
- Wash your hands. Wash your hands with soap and water after handling raw eggs and their shells.
- Clean kitchen surfaces. Wash utensils, bowls, and countertops that contact raw eggs.
- Cook eggs thoroughly. Make sure egg dishes reach the recommended temperature.
The FDA also recommends using refrigerated eggs within three weeks for best quality.
These simple steps help reduce contamination risks without adding an unnecessary washing step.
Does the Advice Change When You’re Boiling Eggs?
If you’re preparing hard-boiled eggs, you might wonder whether washing them first makes a difference.
The answer remains the same for commercially packaged eggs.
You don’t need to wash them before placing them in a pot of water.
The important thing is to use clean, uncracked eggs, handle them properly, and cook them thoroughly.
After boiling, refrigerate eggs promptly if you aren’t eating them immediately.
According to the FDA, you should eat hard-boiled eggs within one week when properly refrigerated.
That applies to hard-boiled eggs whether they’re peeled or still in their shells.
The Bottom Line
Washing eggs before cooking might feel like an extra step toward cleanliness, but it’s generally unnecessary for eggs purchased at American grocery stores.
Commercially packaged eggs have already been cleaned under controlled conditions, and washing them again can introduce additional contamination risks.
For backyard eggs, careful dry cleaning and proper refrigeration are preferable to casually rinsing them under cold water.
The next time you’re preparing breakfast, remember that you don’t need to wash your eggs to make them safer.
Instead, focus on clean hands, proper refrigeration, and thorough cooking.
Sometimes, the safest kitchen habit is knowing which extra step to skip.
