I don't post often, but I have a question that I'm hoping that someone can help me with. A friend of mine made candles - quite a few years ago. I'm honestly not sure how long ago. She's in process of moving and found a case of jars as well as a bunch of bottles of scents in her basement. She generously gave them to me. It was like Christmas that day lol. BUT - I have NO idea how old these bottles of scents are. They're from Missy's Candle Supply. (out of Ohio, I believe) I've tried to find it online, and came up with nothing. None of the bottles are "sucked in" on the sides - which I hear sometimes occurs with older oils. Is this stuff safe to use? I thought that maybe I'd make them into tarts/melts as I make quite a few of these. But, I'm a little nervous. Should I just toss the whole bunch of it? I'm at wits end here - as they smell absolutely wonderful ,,,, but....how old is too old? Any advise would be greatly appreciated....