I have neglected our cutting boards for some time. I treated them with some mineral oil I had on hand. When it dried, I put on a layer of KingsFleet Cutting Board Wax. The boards look much better. They shed liquids and other materials and clean up very easily.
Our 30-year old counters had not been treated for a couple of years and were beginning to dry and stain in a few places. A few hours of treatment with the KingsFleet Boiled Linseed Oil has them restored and resilient. Will try to do another treatment next month, and then regularly 2 or 3 of times per year.