Last year, their late Christmas present was a range of scrap metal, including a car.
This year, the gift is simpler - whiteware, including chest freezers, refrigerators and washing machines.
Branch manager Rob Pape said finding large amounts of dumped material outside the yard was common after long weekends and the Christmas-New Year period.
In the past, he and his staff usually cleared any dumped material ''every three or four days'' during the holidays.
However, this year they decided to leave it.
''If there is too much stuff there, there is less room to dump more,'' he said.
The business was also taking a shorter break than usual and reopening today, as there was an obvious demand for its services.
Staff would spend the first hours of their shift clearing the ''low-grade'' dumped whiteware from the roadside for health and safety reasons, but no profit would be made on it, Mr Pape said.
Signs and surveillance cameras did not deter people from dumping their scrap outside Sims, and after 10 years of managing it, he described the situation as ''like banging your head against a brick wall''.