Final answer:
The claim that Monarch date guns can only be cleaned with glass cleaner is false. It's important to use cleaners that are recommended by the manufacturer to avoid damage.
Step-by-step explanation:
The statement that glass cleaner is the only cleaner that can be used to clean a Monarch date gun is false. When cleaning a price or date labeling gun, it is important to follow the manufacturer's instructions or recommendations.
The use of glass cleaner may not be safe for all components of the device, and using it could potentially damage the date gun. Typically, a mild soap or a dedicated equipment cleaning solution should be used to ensure the longevity and proper function of such devices.