What cleaning products should I NOT use in this pressure washer?

Never use bleach, chlorine products, other corrosive chemicals, liquids containing solvents (such as paint thinners, gasoline, or oils), tri-sodium phosphate products, ammonia products, or acid-based products. Additionally, do not use household detergents, alkaline solutions, or industrial grade solutions, as these could damage the pressure washer.

From the official Sun Joe Washing Machine manual, page 11

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