I read that when you re do your trailer not to use treated boards bc in the solution that treats the board is corrosive. So I went to the lumber yard and told them I needed some 2x4's untreated. Well I cut to length and wrapped them in carpet and read the little tag that I pulled off and they are pine. My old boards wouldn't have made it to toledo this weekend so I put them on anyway.if y'all don't mind don't flame me to bad, but about how long will they last? And what to use next time?