Thank you everyone for replies! I wasn't going to use anything I wasn't sure if! It’s frustrating because they have every other kind of cleaning liquid in the apartment, plus they have tabs for the washing machine. It seems odd to have a dishwasher in a Paris apartment at all, so perhaps they don’t stock the dishwasher tablets. We’re only here for a few days, so it doesn’t make much sense for us to buy them. I just was trying to go to washing dishes for several days. But I guess I will!