No, the TSA does not count wet wipes as liquids, gels, or aerosols. This means they are exempt from the 3-1-1 liquids rule, and you can bring as many as you like in your carry-on bag regardless of the package size. Whether you are carrying baby wipes, antibacterial hand wipes, or large body-cleaning wipes, the TSA considers them to be "solids" because the liquid is absorbed into a fabric substrate. You do not need to place them in your quart-sized clear plastic bag; they can remain in your backpack or purse during the screening process. This makes wet wipes a "traveler's best friend" for staying fresh on long flights or for sanitizing your tray table and armrests. It is worth noting, however, that cleansing balms or thick creams in jars are often classified as liquids or gels if they are "spreadable," so it is always safer to stick to wipe-based products if you are trying to maximize your limited space for other liquid toiletries.