A dishwasher that isn’t cleaning properly can be frustrating, but there are simple fixes you can try before calling in a repair service. The first thing to check is the spray arm; make sure it’s not clogged with debris, as this can prevent water from circulating effectively. Also, inspect the filter at the bottom of the dishwasher, which can accumulate food particles. Another common culprit is the water temperature—dishwashers work best when the water is at least 120°F. Lastly, check the detergent you’re using; some detergents can leave a residue that affects performance. If none of these work, it could be a more serious issue, such as a malfunctioning pump, requiring professional attention.