Putting your scissors in the dishwasher may do several things: blunt the blades, cause staining or discolouration of the finish and/or rust within the hinge or cause the bolt to loosen. If you wish to ensure your scissors (especially kitchen scissors) are sanitary, wash with warm water and non-chlorine soap, drying thoroughly before storing. Many of our kitchen scissors offer detachable blades to allow you to clean and dry within the hinge.