Normal dishwasher detergent. Never put dish soap like Dawn in a dishwasher, I've seen at least 3 kitchens flooded as a result of people not knowing this.

It does works in a pinch, just use about 3-5% as much as normal and skip the drying phase to rerun.

A related issue is people just use way to much detergents in general, presumably because commercials show people using excessive quantities. Plop Plop Fiz Fiz for example just about doubled Alka-Seltzer’s sales.

Regular Dawn detergent or "dishwasher" detergent?

Dishwasher detergent only (i.e., stuff specifically marketed as for going into dishwashing machines)

Absolutely don't put dish soap like Dawn into your dishwasher - it will foam up, shoot out of the dishwasher, and absolutely wreck your dishwasher and surrounding kitchen with foam.

If you're curious what this mishap would look like, check out this image search: https://duckduckgo.com/?q=put+dish+soap+in+dishwasher&t=ffab...