Yes, you do need special soap or detergent specifically designed for use in a dishwasher. Regular dish soap, such as the liquid or powder you use for handwashing dishes, should not be used in a dishwasher. Dishwashers require a specific type of detergent that is formulated to work effectively in their unique cleaning process.
The main reason for using dishwasher detergent is that it produces less foam compared to regular dish soap. Dishwashers are designed to spray water with high pressure to clean dishes, and excessive foam from regular dish soap can cause the dishwasher to overflow and lead to other mechanical issues.
Dishwasher detergents also contain chemicals that are effective in breaking down food residues, grease, and other stains found on dishes. They often include enzymes and surfactants that work well in the high-temperature environment of a dishwasher to ensure thorough cleaning.
There are different types of dishwasher detergents available, including powders, gels, and tabs. Some dishwashers may work better with specific types, so it's a good idea to refer to the manufacturer's recommendations in your dishwasher's manual.
In summary, to ensure proper cleaning and avoid damaging your dishwasher, always use a detergent specifically designed for use in dishwashers. Regular dish soap is not suitable for this purpose.