I was wondering how long the fragrance will last once they are made up. I was thinking of making up my top sellers and putting them in the bags since the holidays are so busy but I was wondering how lomg they would last if they don't all get sold. I use both paraffin and soy blend--the soy blend is mostly soy. I buy from Candle Source,Natures Garden,Taylored Concepts and Day Star if that helps. thanks, Sandy