Pheromone traps are biocides and, as such, permits are required (fall under biocide product category 19: lures - see Annex V of the European biocide regulation). The partners in Sittard-Geleen (NL) have been using pheromone traps for over 10 years but they do not seem to be especially suitable for the oak processionary moth. In their usual life cycle, in 95% of cases, mating will have already taken place before the moths fall into the traps. So, the traps are not effective for this type of processionary.