While we diligently wash dishes and wipe countertops, one kitchen item often goes overlooked—the dishwashing sponge.

Studies reveal that sponges can harbor millions of bacteria, making them one of the dirtiest household items.

Here's why your dishwashing sponge may be dirtier than you think and how to keep it as clean as possible.

Dishwashing sponges are absorbent, trapping food particles and moisture. This creates an ideal environment for bacteria, which thrive in warm, moist conditions.

A damp sponge left in the kitchen provides the perfect breeding ground for bacteria, including E. coli, Salmonella, and other pathogens that can cause illness. Using a dirty sponge risks transferring these bacteria to dishes, countertops, and hands, potentially leading to contamination and health risks.

Many assume that rinsing a sponge with hot water or soap eliminates bacteria. While soap and water reduce surface bacteria, they don't reach bacteria deep within the sponge. Microwaving or boiling sponges may kill some germs but can also weaken the sponge, making it more porous and prone to bacteria.

Another misconception is using a sponge until it appears dirty or smells bad. By the time you notice these signs, the sponge is often already filled with harmful bacteria. Visual cleanliness is misleading, as bacteria can build up without visible signs.

Experts recommend replacing sponges every one to two weeks. Though this may seem frequent, regular replacement is essential to prevent bacterial buildup. If you prefer an eco-friendly option, consider washable dishcloths or silicone sponges.

Dishcloths can be washed in hot water, while silicone sponges are easier to sanitize and less likely to harbor bacteria.

Here are some tips to reduce bacteria buildup between sponge replacements:

Sanitize Regularly: Microwave a damp sponge for one minute to kill some bacteria, or soak it in a bleach solution (one tablespoon of bleach per quart of water) for five minutes, then rinse.

Wring Out After Use: After each use, wring out your sponge to remove excess water, then store it in a dry place. Avoid leaving it in a damp area, as this encourages bacteria.

Avoid Cross-Contamination: Use separate sponges for different tasks—one for dishes and another for surfaces—to minimize bacterial spread.

Replace Frequently: Even with sanitization, sponges can still harbor bacteria, so replace them every week or two.

If you're looking for a more hygienic option, try dish brushes or silicone sponges, which are less porous and dry faster than regular sponges. Dish brushes can be cleaned easily, and many silicone sponges are dishwasher-safe for thorough cleaning.

Microfiber dishcloths are also an eco-friendly alternative. They dry quickly and can be washed after each use, making them hygienic and reusable.

Your dishwashing sponge may be harboring more bacteria than you realize, compromising your kitchen's cleanliness. By sanitizing regularly and replacing your sponge often, you can reduce the risks of contamination.

Consider switching to more hygienic alternatives, such as dish brushes or washable cloths, for a cleaner, bacteria-free kitchen.

Next time you wash dishes, remember that your trusty sponge might not be as clean as it appears. Taking steps to minimize bacteria helps keep your kitchen safer and healthier.