Olive wood is a very hard wood and will last a lifetime if properly looked after.
Do not put your olive, acacia or marble item in the dishwasher.
Olive & Acacia wood will also crack if exposed to excessive heat, such as by putting it in the dishwasher, which causes it to over-dry.
Hand-wash only using hot, light soapy water.
Hand-dry rather than allowing to air dry will keep the wood from swelling or warping over time.
Avoid leaving olive wood sitting in water to keep it from cracking.
Prolonged exposure to water raises the grain of the wood and causes it to swell, which can result in cracking. Always make sure your olive wood is completely dry after washing it.
Treat olive and acacia wood occasionally by rubbing in a little food-safe mineral oil.
Rub a small amount of oil onto the wood using a kitchen towel or lint free cloth. This will keep the wood from drying out and will bring out the natural grain and colouring of the wood.
How often you need to oil your olive wood really depends on how often you use it.
If you use it regularly, you might oil it once a week. If you only use it occasionally, you might want to get in the habit of oiling it after every use.
Even if you only use it for decorative purposes. If you oil it at least once a month, it will retain its smooth shine.