If your dishwasher that will not clean your cups, plates, spoons and forks properly, you can try this easy solve before hire a service. Your dishes will be sleek.

Firstly, disassemble your propeller which is in your dishwasher. Then clean propeller with a thick needle as in the following picture.

You will see the difference at your dishes. The water will go anywhere so dishes will be more clear and brighter.