Winter cleanup in the Szalka forest is by now a tradition, as the monitoring activity of the PET Cup found the most polluted, garbage-covered area of the Hungarian part of the Tisza here. 7 acres of Natura 2000 forest were cleaned in two years and a total of 7 tons of garbage have been so far removed from the protected habitat. More than half of the waste removed from the river bed was recycled thanks to the water management and the volunteers of the PET Cup. The flood of plastic that had arrived with the last flood was stopped by the machines of the Directorate of Water Management on the Upper Tisza Area, the previous floods, however, had polluted the area without obstacles. That is why a new intervention is needed to clean the river and the floodplain forest. Between 28 February and 1 March, experts remove recently deposited waste and clean areas that have not been reached so far. On the basis of previous experience and the high number of participants, another 3 tons of waste are expected to be collected.