Smearing of glasses in commercial glasswashers can be a common problem, but it can be easily resolved by following some simple steps. Firstly, make sure that the glasses are properly washed before placing them in the glasswasher. Any residual food or drink particles can cause smearing. Secondly, use a good quality glasswashing detergent and rinse aid to avoid any buildup of soap scum or hard water stains. Thirdly, ensure that the water temperature is set to the recommended level for your glasswasher model. Lastly, check that the glasses are properly loaded into the dishwasher racks and are not overcrowded. Overcrowding can cause the glasses to rub against each other and cause smearing. By following these steps, your glasses should come out of the glasswasher sparkling clean and free from any smears or streaks.