Hello, we are renting a timber-frame home in NC. The home also has kempas hardwood floors throughout. Since we have moved in, small patches of what I would consider to be droplets of some sort of yellowy, waxy substance have appeared on the floor out of nowhere. When i try to clean it up, it leaves a dull, waxy patch on the floor; could the beams from the timberframe be dripping sap of some sort? I have noticed on some of the posts a yellowy, drippy substance, that is hardened over and can