The finish would typically need to be reapplied every year or so as a single coat, less frequently depending on usage. It lasts much longer than mineral oil finishes. Cleaning is typically done with white vinegar. General Finishes' "Wood Bowl" finish actually used to be labeled "Salad Bowl" finish. I would only use bleach if the surface was deeply scarred and then re-sand the surface before applying multiple new coats.How long might a "wood bowl" finish last? Say, I made a salad bowl. It's gonna have vinegar and dressing in it.
Also, what's best way to clean a wood bowl, that will prevent bacteria. Use a bleach solution, the way cutting boards are cleaned?