As a follow up, a couple of more things to consider. If you use your saws to cut up the new treatment type lumber and do not do a very good cleanup on the saws before you store them in the toolshed, the salt will eat them up as well as the other tools you used. If you use the treated lumber to floor out your utility trailer, it to will be rusted out very soon as well as all other common metals the lumber is in contact with. The problems are not restricted to the fasteners used in the lumber.