I called a few years back and was told that they share facility with several other companies. Thus, I was advised not to use their stocks. We've avoided them ever since.
I don't have notes from back then, but it seems to me that they had something on their label that alluded to being peanut or tree nut free, but when I called, only the product was free of those (not the lines).
If you do a search on the old board, I bet you could find the information from my phone call to them.
Best wishes, Elle