We get very few rust complaints, but Oregon coast seems to be particularly hard on steels. Most guys can just dry them off at night after after hunting in the rain and be fine. I recommend reapplying mineral oil after a rainy hunt and we make a dispensing pen for easy application. As mentioned, our A2 Tool steel has 5% chromium, so a decent amount of corrosion resistance but less than stainless steel. In a rain forest type area, a thicker coating of Blade Guard Paste, Jag Wax, or Renaissance Wax on the blades is probably a good idea. I've had customers swear by all three and I've tried them, just haven't personally seen the need anywhere I've hunted.