Yes, vinegar can be used in a washing machine occasionally, especially for odors. But it is not something I would pour into every load forever.
Can you use vinegar in a washing machine?
TL;DR
Yes, sometimes. Vinegar can help with odors, but too much use may be hard on rubber parts over time.
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Use plain white vinegar and keep the amount modest. Many people add it to the rinse cycle rather than mixing it directly with detergent.
Do not mix vinegar with bleach. That combination can create dangerous fumes.
If your washer manual warns against vinegar, follow the manual.
Vinegar can help laundry sometimes, but it is not a magic replacement for proper detergent and machine care.
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