Wirebeard is correct, you need to really dry of the razor after use. Hot water will heat the business end and water will vanish before your eyes once you wipe it down. I've purchased razors older than Mccain that did well just sitting in a drawer for 8 or 9 decades or more. Sure they had pitts and crud but so would we under the same conditions.
P.S no ding on mccain he is a good neighbor.