Pest control workers have been battling an infestation of the so-called "hellish caterpillar" on Amager, Denmark, throughout the week. Crews have been using vacuums to remove the nests, known for causing irritation. Despite successfully removing over 300 nests, the work is ongoing as the infestation persists. Authorities are concerned about the potential for further spread. The “hellish caterpillar” refers to the larvae of the oak processionary moth, known for its irritating hairs. The removal efforts aim to mitigate public health risks associated with contact with the caterpillars and their nests. Continued monitoring and removal are planned to fully address the situation.