Cleaning a glass jar in the dishwasher might seem like a easy way to clean the jar and remove the label at the same time — but don’t do it. The paper or plastic label can break apart and end up in your dishwasher’s drain pump. You will then need to take apart your dishwasher in order to clean out your drain pump.
Instead, soak the jar in a sink full or warm soapy water in order to easily remove the label. It should peel right off.