northern hewer
I only offered the copper napthalate as an alternative to some of the known to be bad treatments. After doing some research I came across it and if some of the manufactures and federal testing of it is to be accepted then it is a relatively safe product. Check out one of the sites at
http://www.merichem.com/products_services/wood_preservative/index.php an older treatment was to char (burn) the post, and white wash is known to keep fences good for years (probably the lime)
