that is why you need the Fastway tethered Ball Cover.
A Ziploc bag in the glove box is not a great solution! Covers ball to keep grease in;Tethered for when towing;California Residents: WARNING Other covers are available, but what do you do with them while you are towing? It keeps the grease off your clothes and everything else when you are not towing, and has a convenient tether that loops around your hitch ball to keep the cover right there while you are towing so it is easy to find when you are done. Fastway Hitch Ball Cover - 82-00-3216 Keeping your hitch ball greased up is a messy necessity.