If I know I have powderpost beetles and the outside has been stained but the inside has not, can I apply a borate to just the inside and expect it to work or would I have to strip outside also and then apply borate inside and out? Also, I have submitted questions in the past. Do you send the answer to email address provided or do we just keep reading through answers to find ours?
Just putting it on the interior will not work. To have it work properly you will have to strip the exterior and apply. If you do, use Shell Guard or Shell Guard RTU from Perma Chink. Call Timeless Wood Care Products at 800-564-2987 or www.timelesswoodcare.com to purchase. We are in the process of having it emaildirectly back to you.