When it comes to cleaning the glass panels of your internal French doors, a simple homemade white vinegar and water mixture is one of the best cleaners out there.
However, the acidity of the vinegar is not necessary to clean the wooden frame or panels of the door. A mix of warm water and mild washing-up liquid should be more than enough to break through any build on the surface of the wood. Wipe it down afterwards with a dry soft cloth too, to make sure the water doesn’t affect the surface of the door.