Don't take my word for it... try it yourself:
2 parts Olive Oil
1 part Lemon Juice
Mix it together and then use a cloth to put it on the wooden furniture.
Use a dry cloth to polish and your furniture will shine.
Since your first recipe on drain cleaner worked, I gave this one a shot too. I went out and bought some lemon and olive oil and gave it a test run. It did a pretty good job on my old wooden desk. My mother came in my room and asked me how I got it so clean so I passed on the recipe to her. Thanks!
I haven't got much wooden furniture, but I have tried this out on a bookcase, and it does work well.
You can't beat it on price either, it literally costs pocket change!
It's certainly a great tip, thanks.