My house is a 26 year old yellow pine log home and I have maintained it well. I have primarily used CWF stain but have restained about every 2 to 3 years. I am looking for a better stain to use this spring. Woodguard sounds like a good one for exterior. What would your recommend? Also, what should I do to clean the logs prior to staining. Normally I have just used a cleaner and water hose.