I second what the above poster says, and not only that but if you consider that the vast majority of people who use dishwashers are single or two-person households, the loads used is far less than once a day. In a two person household (me and my husband) we run the dishwasher maybe twice a week. That's 104 loads a year, translating the 510 loads in the six canisters to not quite 5 years. Yes, this ad is misleading - it doesn't cover nearly enough time!