This item is for an YummyInks cleaning cartridge. This cartridge is filled with a specialized food grade cleaning solution which is great to help unclog printheads that may have become clogged due to non-use of your printer. Edible inks are made with water-based food coloring they include sugar and color. If you leave the printer idle for too long the liquid from the cartridges may evaporate slightly leaving behind deposits which can crystallize and clog up your printer's print heads. By turning your printer on and then off once a day your printer is primed to do a cleaning cycle and keeps the inks flowing through the print-heads preventing clogs. If your print-heads clog up due to non-use you can instal one of these cleaning cartridges and run a print-head cleaning cycle in your printer and print a few pages to get the cleaning liquid to run through the printer. Then switch back to your YummyInks edible ink cartridge and get back to printing. Do NOT use cleaning cartridges or cleaning solution from sources that do not designate the cleaning solution as "food grade". YummyInks brand cleaning solution is food grade and intended to be used on a printer that is dedicated for edible ink printing.