The staircase at Goddards House was designed by architect Walter Brierly in the Arts and Crafts style. It is wooden and has a highly decorative banister, complete with finials, which, over the one hundred years of use, has accumulated a deep layer of dirt. This grime is the consequence of various hands using the banister for support and dust settling on it. Although the dirt itself is not harming the wood or causing it to deteriorate, on hot days when the sun shines through the window the surface of the banisters becomes very sticky. This is uncomfortable for visitors to the site who touch the banisters and can attract microorganisms…