We are replacing 21-10′ sections of logs on our 22 year old home. (east & west sides) Either termites or some boring bettel ??(North MS area) Current logs are pine but we can only locate cypress. Have logs on site and shaped to replace. How do we treat the new wood logs before installing (for Bugs) and how long before we can install after treating? Then, what is the difference in staining and sealing??Thank you