Amongst the significant issues for the park is the damage on the woods caused by the bark beetles. Thousands of hectares were destroyed by this insect in Rila, Pirin and the Rodopi mountains. One of the measures carried out is to place pheromone traps in the vulnerable areas. Biologists are constantly monitoring with what temps the population of the bark beetles is growing and are the measures taken efficient. The existence of private hunting grounds next to the protected natural zones is another problem. The hunters and the owners of the hunting zones use baits to direct the animals to the hunting pints. In some cases the bites attract also animals, like wild pigs, deers and mountain goats, which habitats are in the protected zones of the park. To keep those animals away from the hunting grounds, park officers regularly place salt licks on their routes. Another conservation action, implemented in cooperation with NGOs, is to collect the stools from the mountain goats. The purpose is to help biologists analyze the reasons for the high mortality rate among the populations of these species. They are expecting to find out the bacteria or the poisonous material, which is causing the deaths. The collected samples will be analyzed in national and foreign laboratories and based on the obtained results preventive measures will be suggested.