Any suggestions on what to use to treat a cedar fence post that is below ground? I pulled a couple of cedar posts at my place that have only been in the ground 4 or 5 years and I was amazed at how much wood had rotted away. The soil around the yard is very well drained, high sand content. I have a fence project coming up in a couple of weeks and the homeowners are fairly particular. I do not want a call back from them in a few years because the posts are starting to rot away. I was thinking something along the lines of Cuprinol, but to be honest, I'm not sure they even make that anymore?