The Inkedibles printhead cleaning solution is a proprietary food-safe formulation that is used to clean your printer’s printheads if they become clogged, and also used to clean and maintain your printheads. Printheads can clog due to non-use of a printer - leaving a printer idle, especially when you have edible cartridges installed, can cause the water from the ink droplets which accumulate at the heads to evaporate, leaving behind crystalline (sugar) deposits which can clog the print heads. The way to avoid this problem is to ensure that you print at least 1-2 pages with your printer per week, and if you are going to leave the printer out of use for a while, to ensure that you at least power cycle it every other day (turning it off and then on gets the ink flowing), or leave food-grade printhead cleaning cartridges installed while the printer is out of use. If you do get a clog in your printer’s printheads, it will show up when you print as colours could come out dull, or you will notice lines on the page or missing colours.