As long as they're dry and insect-free, great.
(Even if they have a few insects you might still be able to use them after washing, but you can pretend I didn't say this if you'd prefer.)
I once read of an amateur beekeeper who, finding they were required to put a best before date on jars of honey they sold to the public, asked their local apiarist association for advice, which came back as "Honey found in Egyptian pyramids proved to perfectly good to eat some four thousand years after it was buried. Err on the side of caution and label it 'Best before end of 3020'."