Has anyone any first-hand experience with leaving a tumbler outdoors for extended lengths of time, in a high-humidity environment? To cut down on dust and noise, I'm thinking of running the tumbler out on the porch. My concern is that by leaving it outside, the humidity may cause issues with the walnut media. Since this is Florida, and we can pretty much drink the air around here, I'm worried about how long it can last. Anyone else face the same issue?