Does anyone know if you can or need to oil the bamboo platters/bowls at any time after any uses? I have a customer that's used to using oil to treat her wooden salad bowls and wanted to know if it's something that needs to or can be done with the bamboo ones too. Any help would be great. I've tried looking throughout everywhere I could think of and all I can find is that bamboo doesn't absorb moisture like wood, so I'm thinking that you wouldn't need to oil the bamboo at all. Thanks in advance for any help and or ideas.