I agree 100% Mike. Maybe I'm anal but whenever I use a tool, (and these units are tools) it is cleaned before being stored away. Ready for it's next use. Which generally extends it's life expectancy. Many people do not prescribe to these measures and will toss away said tool, and simply repurchase. That is one of my personal pet peeves. Remember the old ads from Fram Oil Filters? Tthe mechanic says "you can buy one now, OR pay me later!" Meaning engine over-haul!