Mike, all stainless steel can get a little surface rust on it, over time, given the right conditions. The 201 stainless, used in these smokers, is very high-strength stainless, and is highly corrosion-resistant. Stainless steel is not stainproof steel. The smoke box is subjected to high temperature fluctuations, that can breakdown the anti-corrosion properties of any stainless, over time. I believe the seasoning coating, on the entire interior, will help prevent this. I have a good collection of cast iron pans, and am well-versed in the seasoning process to keep them rust-free, and in great condition. While you certainly don't have to go to the extremes that you do with cast iron, I feel a little prevention is important - even with stainless steel.