Clean as in routine cleaning? I remove dust and grime with a microfiber cloth.
wooden? Metal that is rusted? plastic that is dirty? What are you trying to achieve? Murphy's oil soap it good for cleaning wood.
Lorri....Do you want to strip paint or stain? Citristrip is what I use. Good luck!
It depends. If they are wood, I'd use Murphy's Oil Soap to clean then add some Old English oil. I'd put the oil on heavily, let it soak in, then polish it with a soft cloth. If the tables are laminate, my favorite clean is a 50/50 mix of water and vinegar with a few drops of Dawn. I use a paste of baking soda and water for any stains by applying it an letting it sit a while before using the vinegar solution to completely remove it. I hope that helps. Wishing you the best.