If you're new to washing cloth diapers altogether, start with the main wash routine guide — the four-step prewash, main wash, dry sequence is identical whether you're washing for an infant, a 10-year-old who wets the bed, or an adult managing daily incontinence. This page picks up where that one leaves off.

Volume is the single biggest variable. Adult and older-child urine is more concentrated than infant urine, the diapers themselves hold two to four times more liquid, wash frequency moves from every 2–3 days to every 1–2 days, and a load that filled half a drum for a baby now fills the whole drum. Ammonia builds up faster, hemp behaves differently from the cotton and microfiber that dominates baby cloth, and bowel incontinence (common in adults, occasional in special-needs older kids) needs a different pre-wash strategy than baby poop. Whoever you're washing for — your own child, an aging parent, yourself — the principles below apply.

What changes vs baby cloth diaper washing

If you've washed baby cloth diapers before, the muscle memory transfers — but seven things scale up or shift entirely once you're washing for an older child or adult.

Each of these is covered in the sections below.

Load size and wash frequency

A heavy-wetting adult typically uses 4–6 fitteds plus 8–12 boosters in a 24-hour period. A big kid using cloth full-time goes through 3–5 diapers a day. At those volumes, a stash that supports a 2–3 day wash cycle — the standard for baby cloth — gets uncomfortably large and expensive. Most families and adult users settle into a wash every 1–2 days for full-time use, every 2 days for nighttime-only.

Drum fill at adult volumes

The "fill the drum 2/3 to 3/4 full" rule from the main wash routine still applies, but it's easier to over-fill rather than under-fill. Six adult fitteds with their boosters can saturate a standard 4.5 cu ft washer once they're wet — wet hemp and cotton weigh significantly more than the same fabrics dry, and an over-stuffed drum loses agitation just like an empty one does.

When to split loads

Split your wash into two loads when:

• You're running a small or compact HE (under 4 cu ft) and washing for a full-time adult user
• You've gone three or more days without washing and have a large backlog
• You're combining day and night diapers from a heavy-wetting big kid plus a heavy-wetting adult in the same household

Splitting loads is annoying but it's better than running an over-packed wash that doesn't actually clean. A single under-cleaned load creates ammonia problems that take weeks of routine adjustments to fix.

Stash size to support the schedule

Handling bowel incontinence in cloth

This is the part nobody talks about, and it's the single biggest reason adults and caregivers hesitate to try cloth. The honest answer: yes, cloth diapers can handle bowel incontinence, and yes, the wash routine handles it without contaminating other laundry — but you need a deliberate strategy, not improvisation.

The three-tool approach

Almost every successful cloth user managing adult or older-child bowel incontinence relies on some combination of three tools:

Pail strategy for bowel incontinence

For wet-only users, a single dry pail with the lid cracked for airflow works fine. Once bowel incontinence is in the picture, two pails work better: a smaller pail near the toilet for rinsed soiled diapers, a larger main pail for wet-only. The smaller pail gets emptied into the main load on wash day, but stored separately in between to keep airflow around the wetter, more contaminated items.

Don't use a wet pail (water-soaking) for adult diapers. The fabric weight makes them difficult to lift, the standing water grows bacteria fast, and you create a serious mildew risk if you delay washing.

The wash itself

The wash routine doesn't change for bowel incontinence as long as you've handled the solids before the diaper goes in the pail. Run the standard prewash + main wash from the routine guide. The prewash removes residual soil; the main wash sanitizes and deep-cleans. If you're concerned about pathogen reduction — particularly if the user has had a recent infection or course of antibiotics — do an occasional warm or hot main wash up to the 130°F ceiling. See the water temperature guide.

Ammonia management at adult volumes

Ammonia forms when bacteria break down urea in urine. Adult and older-child urine is more concentrated than infant urine, contains more urea, and produces more ammonia per unit of liquid. The same wash routine that kept a baby's diapers smelling fresh can struggle with adult volumes — not because the routine is wrong, but because the ammonia load is higher.

Why ammonia gets worse at adult volumes

• Higher urea content. Adults excrete 25–30 grams of urea daily; infants excrete 5–10. More urea means more ammonia precursor in the diaper.
• Longer storage between voids. Adults often hold urine longer than infants do, so each diaper sits with a larger volume of more-concentrated urine for longer before the wash.
• Hemp and cotton trap urea. Both are natural fibers that hold urine well — including the urea component. If the wash doesn't fully rinse out the urea, the next day's bacteria break down the residue and the ammonia smell appears even on clean-from-the-wash diapers.

The four-step ammonia fix at scale

If you're getting strong ammonia smell on clean diapers (out of the wash) or strong smell on used diapers (within an hour or two of being worn), work through these in order:

For the full diagnostic process across all smell types — ammonia, barnyard, mildew — see why cloth diapers stink.

When medications change the wash

This is something almost no cloth diaper resource mentions, but it matters: several common medication classes change the chemistry of urine in ways that affect how the diapers wash. If you've started a new medication and noticed your cloth diapers smell stronger, leak more, or feel like they're not getting clean — the medication may be the variable, not the routine.

This isn't medical advice. We're not telling anyone to change a prescription. We're noting laundry implications so you can adjust the wash without assuming your routine has broken.

If you can't pinpoint why a previously stable wash routine has stopped working, walk through medication changes in the past 30–60 days. New prescriptions, dose changes, and new supplements all qualify. Adjusting wash frequency or adding a rinse usually solves it without needing to strip or strip-and-reset.

Caring for hemp fitteds and boosters

Big kid and adult cloth diapers are hemp-heavy by design. Hemp absorbs more per unit of bulk than cotton, microfiber, or bamboo — which is why it dominates the high-capacity end of the cloth diaper market. But hemp behaves differently in the wash than the fabrics most cloth users learned on with baby diapers.

What's different about hemp

Common hemp wash mistakes

• Pulling hemp out of the dryer too early. If a hemp booster feels dry on the outside but heavy in the hand, the core is still damp. Storing damp hemp grows mildew and the smell is stubborn. Run a second dry cycle or hang to finish.
• Assuming low absorbency means the diaper is broken. A new hemp diaper that "isn't holding much" usually just needs more prep washes. Don't return it — wash it 3–4 more times and re-test.
• Stripping too aggressively. Hemp doesn't accumulate buildup the way microfiber does. If something's wrong with hemp absorbency, fabric softener residue or detergent under-dosing is far more likely than buildup. Don't strip hemp routinely.

Detergent dosing at adult scale

Most detergent labels list dosing for "regular," "heavy," and sometimes "extra heavy" loads. Adult and big kid cloth diaper loads are extra heavy — full stop. The standard dose listed for "heavily soiled" is the right starting point; if you're seeing ammonia smell, leaks, or detergent-residue rashes, the dose is the first thing to adjust.

Starting dose by detergent type

For brand-by-brand dosing recommendations and water hardness adjustments, see how much detergent for cloth diapers and the recommended cloth diaper detergents list.

Cloth diaper laundry in a shared household

Adult cloth diapers in a shared home — or big kid cloth diapers when older siblings are old enough to notice — raise practical questions that don't come up with baby cloth. The good news is that almost all of them are solvable with placement, timing, and a little planning.

Pail placement

Keep the diaper pail in the room where changing happens, not in a hallway or shared laundry area. For an adult user, that's usually the bedroom or attached bathroom. Use a pail with a fitted lid and a charcoal or baking-soda deodorizer in the lid — not a fragranced one, which can transfer to the fabric. Empty into the washer on wash days; don't carry diapers through common areas.

Wash day timing

Most adult and big kid cloth users wash diapers on a fixed schedule rather than mixing them with general household laundry. A Tuesday and Friday rotation, for example, means the washer is unavailable for 90 minutes twice a week and predictable for everyone else in the house. Cloth diapers don't share loads with regular laundry except for small bulking items added to the main wash.

Smell control between washes

• Rinse and wring soiled diapers before they go in the pail. The pail then holds slightly damp, mostly clean fabric — not concentrated urine.
• Crack the pail lid for airflow. A sealed pail traps moisture and accelerates ammonia formation. A pail with airflow, slightly open or with a vented lid, keeps smells far lower.
• Wash before three days have passed. The smell threshold goes from "manageable" to "noticeable in the next room" between day 2 and day 3. For full-time users this isn't a constraint — you'll be washing more often anyway.

Traveling with cloth

For overnight or short trips, a wet bag holds 2–3 days of soiled diapers without leakage. Pack a small bottle of detergent, a packet of disposable liners, and plan one wash mid-trip if you're staying somewhere with laundry access. For longer trips or hotels without laundry, most users switch to disposables for the trip and resume cloth on return — cloth users do this without guilt; the routine is flexible by design.

FSA/HSA-eligible cloth diapering

Cloth diapers used for incontinence, enuresis, or diagnosed special-needs incontinence are generally eligible as a qualified medical expense under FSA and HSA rules when prescribed or recommended by a healthcare provider. The same applies to associated supplies — diaper sprayers, liners, waterproof covers, and dedicated detergent in some plan administrators' interpretations.

Reimbursement is straightforward but plan-specific. The general process:

1. Get a Letter of Medical Necessity (LMN) from your doctor or your child's doctor naming the condition (urinary incontinence, fecal incontinence, enuresis, autism with toileting needs, etc.) and stating that cloth diapers are recommended for management.
2. Save itemized receipts for purchases — the LMN covers ongoing purchases for the period it's written for, typically 12 months.
3. Submit receipts to your FSA/HSA administrator with the LMN attached for the first claim. Subsequent claims in the same period usually only need the receipt.

Reimbursement rules vary by plan. Some administrators accept cloth diapers as routinely eligible; others require the LMN every time; a few require a CPT or diagnosis code. Confirm specifics with your administrator before purchase. For a more detailed walkthrough of the process, including which products typically qualify and how to handle declined claims, see our forthcoming dedicated FSA/HSA page.

Common questions

Related guides

The wash routine guidelines on this page are for informational purposes only and do not constitute medical advice. Information about medication effects on urine chemistry is general in nature; do not change any prescription based on laundry considerations — consult your healthcare provider for medical decisions. EcoAble disclaims all liability for any loss or damage — direct, indirect, incidental, or consequential — resulting from the use of this information. It's your responsibility to follow settings appropriate for your washing machine and materials. EcoAble is not liable for any damage caused by washing machines, dryers, or misuse of our products. By using these guidelines, you acknowledge and agree to these terms.