This is per the supplier of the soap dish:
“…[T]hese dishes can last 8 months to a year or more. To extend the life of your soap dish, I encourage customers to use my soap dishes in pairs. Use one soap dish for 2-3 weeks, and then gently wipe clean with a damp cloth and set aside to allow it to fully dry out. Use the second dish fir 2-3 weeks while the first dish dries out, and then alternate them this way. Allowing dishes to full dry out every few weeks will prevent mold and mildew from developing and it will prevent wood from becoming waterlogged and rotting. This will greatly increased the life of a soap dish!”
Let me know if you have any questions. And yes I can sell you a second one!