Can You Add Drain Cleaner to a Dishwasher?

Dangers

• Commercial drain cleaning products can contain toxic chemicals. When you pour a drain cleaner into your dishwasher, residue from the cleaner could remain after unclogging the drain and washing the inside of the appliance. This residue could attach to your dishes during future wash cycles. The drain cleaner residue could be harmful to your health. The drain cleaner could also damage the drain hose, or other parts of the dishwasher, which could lead to leaks or other mechanical problems.

Alternative Cleaning Solutions

• A combination of baking soda and white vinegar can dissolve minor drain clogs in your dishwasher. To use, pour one cup of baking soda and one cup of white vinegar into the drain hose on your dishwasher. Allow the mixture to work through the clog, which can take half an hour or more. After the mixture works through the clog, run your dishwasher through a normal cycle to remove any residue. Running your dishwasher on empty with a cup of white vinegar once a month can also help to clean the dishwasher, which will reduce the chance of future clogs.

Repair

• Most clogs originate in the drain hose attached to your dishwasher. You can remove the drain hose and use an auger or “plumbing snake” to clear out the clog. Follow the instructions in the dishwasher user manual to locate and remove the drain hose. Use caution when using the auger. The auger could cause damage to the hose, or cut or pierce your skin if used incorrectly. Reattach the drain hose following the user manual instructions before running the dishwasher.

Other Considerations

• Serious clogs can cause your dishwasher to drain improperly, and the dirty water and debris can back up into the inside of the dishwasher itself. If you cannot identify the source of the clog, or if your attempts to unclog the dishwasher fail, contact a licensed plumber. The plumber can unclog the drain before any major damage occurs.