Portable dishwashers can be found at hardware stores such as The Home Depot or electronics stores such as Best Buy. They can also be found online on the stores' respective websites as well as on Amazon.com.
All three websites offer reviews from customers who have purchased different makes and models of portable dishwashers. The websites for The Home Depot and Best Buy allow potential customers to compare dishwashers side by side. The Best Buy website also has a separate listing for deals and specials for portable dishwashers. Amazon offers features similar to those of the other websites, but also allows customers to post questions that are then answered by people who already own the dishwasher in question.