Clean Dirty Dishwasher Magnet Sign Indicator - Marie Curie Radioactive Cool Gift for Science Geeks Guajolote Prints Clean Dirty Dishwasher Magnet. Style: Funny Marie Curie Radioactive. Measures 2.5 x 2.5 inches (square). Protected with scratch and UV-resistant Mylar. Durable and sturdy metal shell with strong magnetic backing.