Anyone have any ideas? I know it is oily because I just cleaned up a mess. My wife had taken one out of the outlet and laid it on an end table a couple of days ago (not exactly sure when) when she needed to plug into the outlet.

Unfortunately she put it on its side. The oil leaked out and it completely ate through the stained finish down to the wood. I mean clean through; took out the finish down to the natural wood and it looks like it even took some of the darker color out of it as well.

Now I have what feels like (but probably isn’t quite that deep) a ⅓2” deep a quarter sized hole of light oak in a top of dark mahogany stain.
I want to find out what they use because next time I need to strip a piece of furniture (possibly this one!) I want to use that stuff. It is much better than some of the stripper products I have used in the past.