Cascade Dishwasher Cleaner helps eliminate odors and remove limescale buildup and grease to reveal a fresher, cleaner machine | Simply toss it in your empty dishwasher and run a cycle-just like Cascade ActionPacs | Use once a month to help keep your machine sparkling | Recommended by Cascade Detergent | For best results, use with Cascade Dishwasher Detergent and Cascade Power Dry Rinse Aid | #1 Recommended Brand in North America* *More dishwasher brands in North America recommend Cascade vs. any other automatic dishwashing detergent brand, recommendations as part of co-marketing agreements