Finish Dishwasher Cleaner provides 100% better cleaning and works by safely & effectively breaking down and removing limescale and grease build-up inside your dishwashing machine, including hidden and vital parts of the machine, like the heating element and sprayer arms. Use your Finish Dishwasher Cleaner once a month for optimal results and for a fresh and clean dishwasher. To use, remove the sticker from the top of the Finish Dishwasher Cleaner bottle, place the bottle upside down in the bottom dish rack and then run your dishwasher empty on the hottest cycle. Finish is the #1 Recommended Brand* *Finish is the most recommended detergent worldwide, based on the global market share of the dishwashing manufacturers that recommend Finish