Skanda Purana 5.18.22

5.18.22

yasminno mārjanaṃ harmye kriyate nopalepanam ..
na māṃgalyaṃ ca satkāraḥ pretā bhuṃjati tatra hi .. 22 ..

In a mansion where no sweeping is done nor plastering with cow dung, / and where there is no auspiciousness and no hospitality, ghosts eat there indeed.