Guajolote Prints Clean Dirty Dishwasher Magnet Sign Indicator - Toxic Sterilized- Funny Laboratory Gag Gift Guajolote Prints Dishwasher Magnet. Style: Sterilized and Toxic. Measures 2.5 x 2.5 inches (square). Protected with scratch and UV-resistant Mylar. Durable and sturdy metal shell with strong magnetic backing.