Asarotos oikos

Asàrotos òikos (ἀσάρωτος οἶκος), "the unswept floor, unswept house" - iconography of Ancient Roman mosaics depicting the dirty remnants of a banquet.

Created by Sosus of Pergamon, according to Pliny: "[Sosos] laid at Pergamon what is called the asarotos oikos or 'unswept room,' because on the pavement was represented the debris of a meal, and those things which are normally swept away, as if they had been left there, made of small tessera of many colours."

Natural History (XXXVI.LX.184) One of the best examples is now in Vatican museum.