I bought my traps new this year. At the seasons end when I pulled them I noticed some rust forming due to all the rain and warmer weather we had. What's the best method for keeping them in good order for next season. I know how to keep steel from rusting for sure, but are my methods at hand a bad idea? (WD-40, PB, or other petroleum products) is there something else to use? Or do I just clean them really well before the next season and lube them up now?