Hi all! I have a question....I got some aromatic cedar T&G planks I got from HD last year. They are in the box never opened in the house. I opened them today to start building my cedar closet but I realised that the planks have some shinny dust looking poweder on them. Looks like some kind of crystal powder very shiny like salk or something. I am completely clueless what it is. I hope is not mold. Any help would be appreciated.