Perhaps the most overlooked danger is the residue left behind. Drano is not a "rinse and go" product. It leaves behind a caustic film.
Sarah quickly grabbed her phone and began to research whether or not Drano was safe to use in her dishwasher. She scoured the internet, reading article after article, and finally landed on a few different answers. can you use drano in a dishwasher
If you manage to clear the clog with Drano and run the dishwasher again, trace amounts of the chemical will remain in the sump, the spray arms, and the filter. When you run your next load of dishes, that residue can coat your plates, glasses, and silverware. Perhaps the most overlooked danger is the residue