It depends on whether you clean with a "fill with soapy water and scrub" method or "apply soap, scrub then water jet" method. The latter if done well should be

It depends on whether you clean with a "fill with soapy water and scrub" method or "apply soap, scrub then water jet" method. The latter if done well should be close to what the dishwasher does, but at this point you're better off just washing manually...