 You need to use the bare minimum amount of soap, however. Go to the Procter & Gamble website, the Cascade website, and find out some good tips about how much soap to use. And if you're on a well out there in the country, it's a good idea to install a water softener first. Your dishes will be cleaner, especially the glassware, and you'll use less soap. When you have a septic tank, you should do a scrupulous job removing greasy food particles, much more so than we city slickers have to do.