After I use our Instant Pot, if it is a hard stuck on mess, as soon as the food is out of the Instant Pot, I’ll put the inner pot in the sink and rinse it a bit before putting it in the dishwasher. If it is a light mess, like if I cooked soup, I know not a lot of scrubbing will be involved, so I wash by hand. The dishwasher will get the inner pot perfectly clean, as long as there are no scald marks.