Graham PalmerBy Graham Palmer

To launder cloth diapers well, you rinse soiled diapers, run a cold pre-rinse, follow with a hot main wash using a small amount of detergent, and then dry them completely. Done consistently, this routine keeps diapers absorbent, prevents odor and stains, and protects the elastics and waterproof layers. The steps below walk through each stage, from storage to the final dry, along with the common mistakes that cause most cloth diaper problems.

What You Need Before You Start

Most washing problems come from missing a step or using the wrong supplies, so gather everything first. Keep these items on hand:

Shopping for one? See our guide: Cloth Diapers or Disposable (2026): Which Is Better for Your Baby?.

  • A lidded diaper pail or hamper with a liner or wet bag
  • A front-loading or high-efficiency washer with a rinse-and-hold or extra rinse option
  • A fragrance-free, dye-free detergent made for cloth diapers or sensitive skin
  • Measuring cup or the scoop that came with your detergent
  • A clothesline, drying rack, or dryer with a low-heat setting
  • A spray hose or toilet sprayer for solid waste, if you use one

For storage between changes and washes, see Hygienic Storage for Dirty Cloth Diapers, which covers pail liners, airflow, and how long soiled diapers can safely wait.

Step 1: Remove and Handle Solid Waste

Start by getting solids out of the diaper. Breastfed baby poop is water-soluble and typically goes straight into the wash. Formula-fed and solid-food poop should be dumped into the toilet, or removed with a diaper sprayer if you have one. Use a flushable liner to make this easier. Avoid flushing wipes or non-flushable materials, since they can clog plumbing and septic systems.

Step 2: Store Soiled Diapers Properly

Place used diapers in a dry pail, or in a wet bag, as soon as possible. Keep the lid open or loosely closed so air can move. Empty the pail every two to three days, or more often if it fills up. Damp diapers left sealed in a pail for long stretches can develop ammonia smell and bacterial buildup, which makes stains and odors harder to remove later.

Step 3: Do a Cold Pre-Rinse

Run a cold rinse cycle with no detergent before the main wash. Cold water removes urine salts and surface soil without setting proteins from feces into the fabric. Many manufacturers recommend this step because hot water applied first can bind stains. Expect this rinse to take about 15 to 20 minutes on most machines. If your washer has a “rinse and hold” option, use it so the diapers soak briefly and then drain.

Step 4: Run the Main Wash

The main wash is where cleaning happens. Set your machine to a hot or warm cycle, following the temperature range your diaper manufacturer recommends. Many brands suggest water around 140°F (60°C) or hotter for the main wash, but check the labels on your specific diapers, since some fabrics and PUL laminates tolerate less heat.

Measuring Detergent

Use less detergent than you think you need. Excess soap leaves residue that repels liquid and causes leaks. Start with the lowest recommended dose on the package for your water hardness and load size, then adjust based on how the diapers perform over several washes. Powdered detergents are often easier to rinse out than some liquids.

Choosing a Detergent

Look for a detergent that is free of fabric softeners, bleach additives, and heavy fragrance. Fabric softener coats fibers and reduces absorbency. Enzyme-based formulas help break down proteins in urine and stool. Read the ingredient list and any eco certifications on the label, and check whether the brand explicitly states it is safe for cloth diapers. For a deeper look at choosing and stripping detergent, see Choosing and Stripping Cloth Diaper Detergent.

Adding Boosters and Extra Rinses

If stains persist or diapers hold odor, add an extra rinse after the main wash. Some families use a small amount of a cloth-safe oxygen-based booster in the main wash. Follow the product directions carefully and never use chlorine bleach on cloth diapers, as it can damage fibers and PUL layers.

Step 5: Rinse Thoroughly

After the main wash, run at least one full rinse cycle with no detergent. Some households need two. Residue is the most common cause of leaks, repelled liquid, and a stale smell. Check the diaper by pressing it under running water. If the water beads up or the fabric feels slick or soapy, add another rinse.

For a step-by-step rinse routine and troubleshooting, see How to Rinse Cloth Diapers Properly: A Step-by-Step Guide.

Step 6: Dry the Diapers Correctly

Drying finishes the job and affects how long your diapers last. Heat from a dryer can degrade PUL and elastic over time, so use low heat or air dry when possible. Hang diapers in direct sunlight if you can. UV light naturally brightens fabric and helps reduce stains. For specific methods and timing, see Proper Methods for Drying Cloth Diapers.

Drying Quick Reference

Method Best For Watch Out For
Line drying in sun Stain removal, brightening, lowest wear on materials Slow in cold or rainy weather
Indoor drying rack Rainy days, apartments, all-season use Needs good airflow to avoid mildew
Tumble dry, low heat Quick turnaround, pocket and AIO diapers Heat can wear PUL and elastics faster
Tumble dry, high heat Generally not recommended Damage to waterproof layers and elastics

Common Mistakes to Avoid

  • Using fabric softener or dryer sheets. These coat fibers and cause repelling and leaks.
  • Using too much detergent. Buildup traps odor and reduces absorbency.
  • Skipping the cold pre-rinse. Hot water first can set stains.
  • Washing a small load. Diapers need room to agitate. Stay near the manufacturer’s recommended load size.
  • Overloading the washer. Crowded drums rinse poorly.
  • Using chlorine bleach. It damages fibers and waterproof layers.
  • Drying on high heat. Heat shortens the life of PUL and elastic.
  • Letting diapers sit wet for days. Odor and staining get worse with time.

Tips for Better Results

  • Keep a log for a few weeks if you notice leaks or smell. Note detergent, water temperature, and drying method to find the cause.
  • Check your water hardness. Hard water often needs slightly more detergent or a water softener.
  • Wash diapers separately from other laundry, especially in shared machines.
  • Strip your diapers occasionally if odor or repelling returns. Follow the method your brand recommends.
  • Inspect elastics and stitching during each wash. Early wear is easier to fix than a failed diaper.

A few supplies make the routine easier and more consistent. Look for the search phrases below to find options that fit your setup.

  • Cloth diaper detergent: Look for a fragrance-free, enzyme-based formula labeled safe for cloth. View on Amazon
  • Wet bag or pail liner: A washable liner makes transporting soiled diapers simpler and keeps the pail cleaner. View on Amazon
  • Diaper sprayer: Useful for removing solids without handling them directly. View on Amazon
  • Drying rack: A foldable indoor rack gives you a drying option when the weather doesn’t cooperate. View on Amazon

FAQ

How often should I wash cloth diapers?

Most families wash every two to three days. Wash sooner if the pail is full or if the diapers start to smell before the scheduled wash.

Can I wash cloth diapers with regular laundry?

It is generally better to wash cloth diapers separately. Shared loads can leave residue from other clothing, and fabric softener from other items can transfer to diapers.

Why do my cloth diapers smell even after washing?

Smell usually comes from detergent buildup, incomplete rinsing, or ammonia from urine left in the pail too long. Try an extra rinse, reduce detergent, and empty the pail more often.

Do I need to use hot water for every wash?

Use a hot or warm main wash as your diaper manufacturer recommends. Cold pre-rinses are still important before the hot wash.

Can I use bleach on cloth diapers?

Avoid chlorine bleach. It can break down fabric and waterproof layers. If stains persist, sun drying and an approved stain treatment are safer options.

How do I know if my diapers are fully rinsed?

Press a wet diaper under running water. If water beads on the surface or the fabric feels slippery, residue remains and another rinse is needed.

Is it safe to dry cloth diapers in a dryer?

Yes, on a low-heat setting, but air drying extends the life of PUL and elastic. Check your diaper maker’s care label for specific guidance.

Conclusion

Laundering cloth diapers comes down to a consistent routine: store soiled diapers properly, run a cold pre-rinse, wash hot with a small amount of cloth-safe detergent, rinse thoroughly, and dry completely. Pay attention to residue, heat, and wear, and adjust as needed. If your baby has persistent rash or skin issues, check with a pediatrician or pediatric dermatologist before changing your routine.

Graham Palmer

About Graham Palmer

Graham focuses on practical advice for natural & eco parenting: what matters before you buy, what to skip, and how to get more out of what you already own.