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More bubbles doesn’t mean cleaner clothes: Expert explains the laundry shortcut that can backfire

A thick layer of foam can make a laundry load look as though it is getting a thorough wash. When clothes are greasy or the detergent bottle is nearly empty, adding a squeeze of a familiar kitchen cleaner can seem like a practical shortcut. The trouble starts when that reassuring lather becomes something the machine struggles to remove.

The distinction matters because a product can be useful on one small stain without being suitable for an entire wash. Getting the amount and application right can save extra rinsing, wetter clothes and a cycle that takes longer than expected.

Bubbles in the washing machine
Bubbles in the washing machine. Credit: Shutterstock @Zvigo17

The foam is what concerns the expert

The shortcut is adding dishwashing liquid, such as Dawn, directly to the drum or detergent dispenser. Some versions put the soap on a cloth and add that to the load. Neither approach changes the type of product entering the machine or turns it into laundry detergent.

Rich Handel, a laundry expert at Consumer Reports, explained: “I would be concerned about the dish soap causing a lot of suds.” Washing machines are designed around appropriate laundry formulas, including low-sudsing detergents for high-efficiency models.

Whirlpool explains that excessive suds can make a washer reduce its spin speed, leaving the load wetter. The appliance may add rinses and extend the cycle while trying to clear the foam. Poor rinsing can leave clothes feeling soapy, and excessive suds can escape from the machine.

Dish soap also has a different job. Its ability to tackle grease on dishes does not make it a substitute for a formula designed to wash fabrics. Dawn’s own guidance says its dishwashing liquid is not a detergent replacement and is not intended for direct use in a washing machine.

Treat the stain instead of boosting the whole wash

For a greasy mark, begin with a laundry stain remover or a liquid laundry detergent whose instructions allow pretreatment. Apply it to the affected area and follow the contact time on the label. This targets the problem without adding an improvised extra cleaner to every garment in the drum.

Handel allows for a very small amount of dish soap on a stain when a more suitable product is unavailable. For Dawn Platinum, the manufacturer recommends a few drops for spot treatment on suitable fabrics, including cotton and polycotton. Check the garment label and test a concealed area first; delicate materials such as silk need their own care.

Work the small amount into the mark, following the product’s pretreatment directions, then launder with the appropriate laundry detergent. Avoid covering multiple garments with dish soap or adding another squeeze to the dispenser. A limited spot treatment can otherwise become the same excessive-suds problem in a different form.

For the main wash, measure detergent for the load size, soil level and water hardness using the product label and washer manual. Concentrated formulas require different quantities, so an old dosing habit may not suit a new bottle. If the machine dispenses detergent automatically, check its settings before adding any manually.

Respond to excess suds without adding another cleaner

If the washer is already foaming, read its display and consult the model’s instructions. An active suds-removal routine may be handling the problem. Whirlpool, for example, advises letting certain models continue when a suds message appears with the rinse indicator illuminated. A completed cycle with the same warning may require further rinsing.

After the load is removed, follow the manufacturer’s directions for clearing residue. Samsung advises running an empty cycle without detergent or other additives, repeating if suds remain. That is manufacturer-specific guidance, so check the instructions for your own machine before selecting a cleanup cycle.

Do not add vinegar, baking soda or another household product in an attempt to cancel the foam. If water or suds are escaping, follow the appliance’s leak instructions rather than allowing it to continue unchecked. Persistent leaks, failure to drain or recurring errors need troubleshooting beyond changing detergent.

If several people share the laundry, keep the detergent’s measuring cap beside the bottle and make its dose markings easy to read. When changing products, update any automatic dispenser’s concentration setting. A note beside the machine can prevent the same well-meant substitution from becoming somebody else’s next load.