How to Clean a Dishwasher Filter When Dishes Come Out Dirty

Dirty dishes, food grit, slow draining, and lingering odors can all be signs that your dishwasher filter needs attention. In many dishwashers, the filter traps food particles before they can recirculate through the appliance or reach other components. Cleaning a removable filter is a straightforward maintenance task for many models and may help restore washing performance.

Recognize When the Dishwasher Filter Needs Attention

A dirty filter is not the only reason a dishwasher may leave dishes unclean, but it is a practical first item to inspect. Look for these common signs:

Food particles or grit remaining on otherwise clean dishes
Water that drains slowly or seems to remain in the bottom of the dishwasher
An unpleasant smell inside the tub
Visible residue or loose debris on the dishwasher floor
Cleaning performance that has gradually declined

How often a filter needs cleaning depends on the model, how frequently you run the dishwasher, and how much food remains on dishes before loading. If your owner’s manual provides a maintenance schedule, use that as your primary guide. Otherwise, inspect the filter regularly, especially when you notice performance changes.

Find Out What Type of Filter Your Dishwasher Has

Many newer dishwashers use a removable manual filter that you can take out and wash. Others use a self-cleaning filtration system that may not be designed for routine removal.

The filter is commonly located on the dishwasher floor beneath the lower rack. It may look like a round or cylindrical assembly, sometimes with a flat mesh screen beneath or beside it.

Before you begin, consult your owner’s manual or the manufacturer’s support information for your model. These instructions can confirm the filter location, identify whether it is removable, and show the correct removal and locking method. Do not force a filter or screen that does not move as expected.

Gather Supplies and Prepare the Dishwasher

You only need a few basic supplies to clean a dishwasher filter:

Warm water
Mild dish soap
A soft brush or old toothbrush
A soft cloth
Gloves, if desired

Stop any active cycle and switch the dishwasher off using its controls. Allow it to cool if it was recently used. Follow the owner’s manual for any additional power-disconnection instructions, particularly if work would extend beyond the accessible removable filter parts.

Pull out the lower rack and set it aside or remove it completely, depending on your dishwasher’s design. This gives you clear access to the filter area on the bottom of the tub.

Remove the Dishwasher Filter Carefully

Unlock the Main Filter Assembly

On many models, the main filter is a cylindrical piece that unlocks with a short turn. Grip it as directed in your manual, turn it in the indicated direction, and lift it straight out.

Avoid twisting forcefully or prying at the filter. If it will not release easily, stop rather than trying to force it loose.

Check for a Flat Screen or Secondary Filter

Some dishwasher filter assemblies include a flat mesh screen beneath the main cylindrical filter. Once the main filter is removed, carefully lift out this screen if your model is designed that way.

Keep track of the order and orientation of the pieces so you can reinstall them correctly. Taking a quick photo before removal can help when the arrangement is not obvious.

Wash Food Debris and Residue From the Filter

Hold the removable filter under warm running water to rinse away loose food particles. Then use a small amount of mild dish soap and a soft brush to clean the mesh, crevices, and outer surfaces.

Brush gently, particularly around fine screens. Avoid abrasive scouring pads, harsh cleaners, and sharp tools, which can tear, deform, or otherwise damage the filter.

For stuck-on residue, let the filter soak briefly in warm, soapy water. After soaking, brush it lightly again and rinse thoroughly. Inspect the mesh for remaining debris and rinse again if needed.

Clean the Filter Housing and Dishwasher Sump Area

With the filter removed, inspect the area where it sits. Wipe up visible food particles, residue, or loose debris with a damp cloth. A soft brush can help loosen material around the filter housing or screen.

Work carefully around the sump opening—the area at the bottom of the dishwasher where water collects and drains. Do not reach into inaccessible parts or push debris deeper into the appliance. Remove only what you can see and safely access.

Stop and arrange service if you find broken glass, a damaged screen or filter part, standing water that will not drain, or a filter that will not release as the manual describes. Avoid further disassembly; contact the manufacturer or a qualified appliance technician.

Reinstall the Filter Correctly

Replace each part in the proper order. If your dishwasher has a flat screen or lower filter, set it in place first. Then position the main filter assembly and turn, press, or lock it as your model requires.

The filter should sit flat and secure rather than wobble or lift out easily. An improperly installed filter can reduce cleaning performance and may allow debris into other dishwasher components.

Once the filter is seated correctly, slide the lower rack back into place.

Run a Test Cycle and Check Results

Run a normal wash cycle after cleaning and reassembling the dishwasher. After the cycle, check that the dishwasher drained normally and inspect both the tub and dishes for leftover food particles or grit.

If dishes still come out dirty, consider other common causes, including:

Overloading or blocking the spray arms with large items
Clogged spray-arm holes
Incorrect detergent amount or an unsuitable detergent
A cycle that does not match the soil level of the load
Water that is not reaching an effective wash temperature

Your owner’s manual and manufacturer troubleshooting resources can help with model-specific checks.

Prevent Future Filter Buildup

A few loading and maintenance habits can reduce how quickly debris collects in the filter:

Scrape large food scraps into the trash or compost before loading dishes.
Follow your manufacturer’s guidance on pre-rinsing; some dishwashers are designed to handle light food residue without extensive rinsing.
Inspect the filter regularly and clean it when you see debris or notice declining performance.
Use the recommended detergent and choose a cycle appropriate for the load.
Arrange dishes so they do not block spray arms or prevent water from reaching surfaces.

If cleaning the filter does not resolve persistent dirty dishes, odors, or drainage problems, consult your dishwasher manual or arrange service with the manufacturer or a qualified appliance technician.