I am moving my large, wooden easles to our back deck, building a painting space. It is covered but still open air. They are a red tropical hardwood, but I don't think teak or mahogany What kind of oil would I use to protect them fading and termites? Our gardener used an oil that they use on the farm to protect wooden posts. It works on the rustic wood beams, but is nasty smelling and makes the wood very dark color.