We're going to be moving soon to a house that has two bathrooms (yay) which are both tiled - floor and half-way up wall.

My current bathroom has a wooden floor, no tiles on the wall except for the shower.

I'm a bit bemused by my new bathrooms. Obviously I'm meant to mop the floor but what do I do with the walls? Mop those too or will they not get that dirty? Should I send DD in with a water pistol?