Cat urine in wood cabinets

What about it?

Not a great picture, but we just bought a house and I opened the cabinet under the kitchen sink and got assaulted with cat pee smell. I believe the previous owners had older cats that would pee in places they shouldn’t (obviously). Any suggestions on how to get rid of the smell? I have some Nature’s Miracle enzymatic cleaner, but I want this smell completely gone, so I’m willing to use something more powerful to ensure it gets eliminated. These are stained wood cabinets though, so I have no idea what would be safe to use. Thoughts? Advice?

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