DO NOT use dish soap in the washing maching. How Do I know??? I helped my daughter clean up a foot of soap sudds from her utility room floor that over flowed when my son-in-law used dish soap because he couldn't find the laundry soap. They even started to oozz into the hall. Not fun. But the floor was really clean when we were done. I'm sure you have seen TV shows or commercials where the soap is flowing out of the washing machine. That is what will happen.