I have a friend who lives in Puerto Rico where he says termites are a big problem with standard stick homes. Doesn't have logs on his property but says they are changing all the telephone poles from treated wood ones to some type of concrete and you can get the old poles for a song! Anyone ever use these to build with? After 10-15 years as a utility pole would the chemicals they treated them with still be a problem? He is ok with the way they look.