How To Disinfect Laundry: With And Without Bleach

Your washing machine is a pro at banishing dirt, food, and grass stains. But let’s face it; a standard spin cycle doesn’t always kill the invisible bad guys. To truly sanitize your clothes, you need more than just warm water and detergent.

Learning how to disinfect laundry is a vital skill, especially when a stomach bug hits the household or you are dealing with nasty messes. We have broken down the most effective methods to zap germs, whether you love using bleach or prefer a gentler approach.

Do You Need to Disinfect Laundry?

For everyday wear, a regular wash is usually fine. But there are times when you need to call in the heavy artillery. If someone in your house has the flu, a stomach bug, or a skin infection, those germs can linger in the weave of the fabric.

It is a gross reality, but fecal matter and viruses can survive a standard wash cycle. In fact, washing a sick person’s clothes with the rest of the family’s laundry can actually spread the germs to the clean items ⁽¹⁾.

To stop the spread of illness in its tracks, you need to sanitize specific loads. This includes gym clothes, underwear, towels, and bed linens used by someone who is under the weather.

How to Disinfect Laundry With Bleach

Household chlorine bleach is one of the most effective ways to kill bacteria and viruses. It is cheap, powerful, and easy to find. However, it is harsh; never use chlorine bleach on wool, silk, spandex, or non-colorfast items.

• Time: 5, 10 minutes active time.
• Difficulty: Easy.

What You’ll Need

• Chlorine bleach.
• White cotton clothes or linens.
• Standard laundry detergent.

Using Bleach to Disinfect Laundry

1. Check the expiration date: Bleach loses potency over time. If your bottle has been sitting under the sink for a year, it might not disinfect effectively.
2. Check the labels: Ensure your items are bleach-safe. Also, check the temperature guide; hot water helps bleach work better, but follow the fabric guidelines.
3. Add detergent and bleach: Add your regular detergent. Then, add ¾ cup of bleach to the dedicated bleach dispenser. If you don’t have a dispenser, dilute the bleach with water first and add it to the drum five minutes into the wash cycle. Never pour raw bleach directly onto dry clothes.
4. Wash and dry: Run a regular cycle. For maximum germ-killing power, dry the items on high heat if the fabric allows.

How to Disinfect Laundry Without Bleach

If you are washing dark jeans, delicate items, or simply hate the smell of bleach, do not worry. You have plenty of alternatives that are safer for colors but still tough on germs.

Lysol Laundry Sanitizer

This is widely considered the best commercial alternative to bleach. It is specifically designed to kill 99.9% of bacteria without ruining colors.

1. Read the instructions: Unlike detergent, this usually goes in the fabric softener compartment.
2. Add to the rinse cycle: Pour the recommended amount (usually to the fill line) into your softener dispenser. It works during the rinse cycle to sanitize the fabric after the detergent has cleaned it.
3. Wash: Run your washer as normal. It works in cold water, too.

Hydrogen Peroxide

Think of this as a gentler, oxygen-based cousin to bleach. It is an excellent disinfectant and works well to brighten whites and remove stains without the harsh fumes.

1. Use 3% solution: This is the standard brown bottle you find at the pharmacy.
2. Spot test: While generally safe for colors, it is smart to test a hidden hem first.
3. Add one cup: Pour one cup of hydrogen peroxide into the washer drum or the bleach dispenser as the water fills.
4. Wash: Run the cycle. Be aware that peroxide can lose effectiveness quickly if exposed to light, so pour it right when you are ready to start.

Borax

Borax is a natural mineral that boosts the cleaning power of your detergent and creates an environment where bacteria struggle to survive.

1. Dissolve it first: Borax is a powder that can clump. It works best in hot water.
2. Add to the load: Add ½ cup of Borax to the drum along with your detergent.
3. Run a hot cycle: The heat combined with the alkalinity of the Borax helps sanitize the load.

Pine Oil Cleaners (Pine-Sol)

Pine oil is a traditional disinfectant. However, you must check the label. Many modern “pine” cleaners are just scented soaps. You need a product containing at least 80% pine oil or a brand like Original Pine-Sol that is registered as a disinfectant.

1. Check the scent: Usually, only the “Original” scent contains actual pine oil. The lemon or lavender versions likely do not disinfect.
2. Add to the washer: Add ½ cup of the pine cleaner to the wash cycle.
3. Rinse well: Pine oil has a strong scent, so you might want to run an extra rinse cycle.

Essential Oils

While not as powerful as bleach or Lysol, certain essential oils have antibacterial properties. They are great for freshening up laundry and fighting mild odors.

• Tea Tree Oil: Known for antifungal properties. Add 2 teaspoons to a load.
• Lavender Oil: A mild antibacterial that smells amazing. Add 10 drops per load.
• Thyme Oil: Contains thymol, a compound found in many botanical disinfectants.

White Vinegar

Distilled white vinegar is a fantastic deodorizer and fabric softener. It creates an acidic environment that kills some bacteria and dissolves soap buildup.

1. Select the right vinegar: Use plain distilled white vinegar, not apple cider.
2. Add to the rinse: Pour ½ cup into the fabric softener compartment.
3. Manage expectations: While vinegar fights odors and some germs, it is not a registered hospital disinfectant. For serious illnesses (like stomach bugs), stick to bleach or a dedicated laundry sanitizer.

How to Disinfect Laundry With Heat

If you want to avoid chemicals entirely, heat is your best friend. High temperatures kill the vast majority of viruses and bacteria.

• Hot Water Wash: Set your washer to the “Sanitize” or “Hot” setting (at least 140°F is ideal for killing germs). Check your clothing labels first to ensure they won’t shrink.
• The Dryer: The heat from your dryer is highly effective. Even if you washed in cool water, 30 to 45 minutes on high heat in the dryer will kill most pathogens.
• Ironing: Direct heat from an iron is a great way to sterilize cotton items like handkerchiefs or pillowcases.
• Steam Cleaning: A handheld steamer heats up enough to kill surface bacteria and dust mites, making it perfect for items you cannot put in the washing machine, like curtains or throw pillows.

FAQs

How Long Can Germs Stay on Fabric?

Germs are surprisingly resilient. Viruses like the flu can survive on soft surfaces for up to 12 hours, while some bacteria can linger for days or even weeks if the fabric is damp. To be safe, wash contaminated items immediately or store them in a sealed bag until laundry day.

Can You Get Sick From Wearing Dirty Clothes?

Yes, it is possible. If clothes are contaminated with fecal matter, staph bacteria, or fungi (like ringworm), wearing them can lead to skin infections or urinary tract infections. It is especially risky for underwear and gym clothes, which trap sweat and bacteria against the skin.

How Do You Disinfect Towels In a Washing Machine?

Towels are thick and hold onto moisture, making them breeding grounds for mildew and bacteria. Wash them separately using hot water and detergent. For a deep clean, add a cup of white vinegar to the rinse cycle, or use bleach if the towels are white. Always dry them completely on high heat.

What Do Hospitals Use to Disinfect Laundry?

Hospitals rely on a combination of high water temperatures (at least 160°F), mechanical agitation, and industrial chemical disinfectants. They typically use chlorine bleach, hydrogen peroxide, or peracetic acid to ensure linens are sterile and safe for patients.

Does OxiClean Kill Germs In Laundry?

Standard OxiClean is a stain remover, not a registered disinfectant. While the oxygen bubbles help lift dirt, it does not claim to kill viruses or bacteria. However, the brand does sell a specific “OxiClean Laundry & Home Sanitizer” product that is designed to kill germs.

What Is the Difference Between Sanitizing and Disinfecting?

Sanitizing reduces the number of germs to a safe level as determined by public health standards. Disinfecting uses stronger chemicals to actually kill bacteria and viruses on surfaces. For laundry, “sanitizing” is the standard term, but using bleach or high heat effectively disinfects the fabric.