It might seem convenient to leave your expensive kitchen knives soaking in the kitchen sink but it is a really bad idea. After splashing out on good quality knives for the kitchen, house holders will often start off with good intentions and take extra care to keep their prized knives sharp. However, over time, bad habits set in and knives are taken for granted and thrown into the kitchen sink after use. It is this, seemingly insignificant, action that can ruin your knives. There is nothing worse, when you are in the middle of cooking, than a dull and blunt knife. One look at the edge of a damaged knife under the microscope would be enough to persuade most people never to treat their knives with disrespect again. Therefore.do NOT leave your knives in your kitchen sink. Not only is it dangerous for the person who washes the dishes but your blades will quickly become scratched or broken.