Determining Dishwasher Safe Utensils - as part of the expert series by GeoBeats. Dishwasher safe utensils are always marked with a small emblem of a glass and a fork, and you just want to look on the item and make sure that is on there, or it will say, dishwasher safe. All glass and ceramics are ready to go in the dishwasher, but some plastics can be a little too light, so make sure that your plastic items say that they are dishwasher safe. If they are not dishwasher safe, just wash them by hand. Other items I recommend not going in the dishwasher are fine china and very nice glasses. Sometimes things can knock against each other in the dishwasher, it is just the power of the dishwashers hot water. So, if you think that it is going to chip or break or you do not want it to chip or break, just leave it out and wash it by hand.