What Is a Good Substitute for Dishwasher Detergent?

Baking soda is a common ingredient in many homemade dishwasher detergent recipes because it helps clean dishes while exerting an anti-foaming action. In contrast, using laundry detergent or liquid dish soap alone is likely to leave you with a dishwasher full of suds. Of course, it is important to exercise care so you don't harm your appliance or void the manufacturer's warranty.