I did that just once by mistake. I didn't realize it until I saw my kitty Molly sitting in front of the machine, watching the bubbles come out the sides. Fun for her but what a mess to clean up! :-)
oh my, those dishes will come clean for sure!!
I just washed my white bedspread in water only. forgot the detergent!! my mamma cat had thrown up on it. seems to have come out anyway.