How to Clean a Bosch Dishwasher That Is Leaving Detergent Residue on Glasses

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Prop the door of the Bosch dishwasher open overnight to give the appliance a good airing out.
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It hums along, completing its job one cycle at a time, with nary a notice from those that fill its cavernous tub. The dishwasher often gets overlooked for all it does, until it can no longer successfully complete all the cycles efficiently.

When the dishwasher groans and moans or leaves evidence of a less-than-effective cycle on your dishes, there are a few quick and affordable ways to correct the situation. If there is Bosch dishwasher soap residue or the dishes taste like Rinse Aid, then it's time to do some digging and figure out why the machine is failing.


Prop the door of the Bosch dishwasher open overnight to give the appliance a good airing out.

Why Bosch Dishwasher Dishes Taste Like Soap

The dishwasher is a hard-working appliance with a slew of moving parts. If your dishes taste soapy after the dishwasher has run its regular cycle, then it could be due to soap buildup within these parts. There are many reasons that soap buildup can occur on the heating element, interior of the tub and within the water arms of the appliance. These include the temperature of the water, brand of detergent, water pressure and age of the appliance.

Most dishwasher manufacturers suggest that the temperature hover around 130 degrees Fahrenheit to be effective. Sansone recommends that you check the temperature of the dishwasher during the cycle. You can place a candy thermometer or oven temperature gauge that is water resistant in the top rack of the dishwasher. Run this through an empty cycle on a regular setting to get a good read.

Cleaning the Filter

Remove the filter from the bottom of the dishwasher tub. Most filters have a few screws that need to be removed in order to lift it from its housing.

Bosch recommends that you use a toothbrush to remove debris you can see from the top of the filter. Give the housing a good brushing, as well. Dip the brush in mild dishwashing liquid or powdered dishwasher detergent to take out stubborn clumps of food or mineral deposits. Rinse the filter free of the soapy residue and wipe out the filter's housing.

There may be more than one filter in the interior of the dishwasher. Consult the manual or look up the model number online to find the filters, as well as the best way to clean them.

How to Clean the Bosch Dishwasher

Sprinkle powdered citric acid over the bottom of the dishwasher tub. Place a dishwasher safe bowl filled with 3 cups of vinegar in the top rack of the appliance. Run the dishwasher on a regular cycle. For more serious mineral deposits or hard water spots and buildup, it is safe to use Lime-A-Way or other commercial cleaner made for this purpose.

Once this cycle is complete, run a quick cycle of hot water. Sprinkle a hefty amount of baking soda, about a cup, into the bottom of the tub before pressing start to give the dishwasher and all its miniscule parts a final scouring.

Leave the door open for a few hours to ensure that the cleaners don't leave behind any unwanted odors and the soapy scent is fully removed.


Kimberley McGee is an award-winning journalist with 20+ years of experience writing for a variety of clients, including The New York Times, Las Vegas Review-Journal Home section and other national publications. As a professional writer she has researched, interviewed sources and written about home improvement, interior design and related business trends. She earned a B.A. in Journalism from the University of Nevada, Las Vegas. Her full bio and clips can be viewed at

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