http://www.investmentwatchblog.com/bank-of-america-customers-find-safety-deposit-boxes-vanished-no-explanations/
Get rid of it. This can happen anywhere, and the bank/gubment can take your shoite whenever they feel like it. Google it. It's happened.
A milder tale of why you should stay away from them. I don't have the time to hunt down 'harsher story' links right now.
https://www.marketwatch.com/story/a-safe-deposit-box-is-not-the-safest-place-to-stash-your-cash
Do your own damn research.