I got a hotel with massive mirrors, the water runs to the bottom edge which is hidden by a pic frame and the mirror finish is just starting to peel behind the glass, the vac blade gets all the spare water. Also good for anyone with white carpets, yep battery power is a prob and I aint found a way to direct connect it to a 12v battery as its got an overide inside it. The applicator bottle is crxxp.
Its handy on the odd occassions.