On Dec 14, 5:20*pm, metspitzer > wrote:
> I found some at a relative's house that may be 15 years old.
> It is in a can with a screw off top. *I didn't notice the brand.

If it hasn't been opened and the seal is completely tight then it may
be ok. Considering how inexpensive a can is, I would just buy new and
not have to worry about contamination.