The purpose of research was to find out which of three (Chalcopraxr top, Chalcowitr, PC - Ecolurer) synthetic pheromones is the most appropriate for monitoring population dynamic of six-toothed spruce bark beetle (Pityogenes chalcographus). The research took place in 2009 in NW of Slovenia on a plateaunamed Jelovica, on area of the big windthrow in 2006. The efficiency and selectivity were tested for each type of pheromone. Three locations were chosen and on each of them four Theysohnr pheromone traps were set. In three traps were put, separately, one sort of pheromone. The fourth trap was used for control. The rotation experiment was made. The most efficient was pheromone Chalcowitr, next was PC - Ecolurer, the least efficient was Chalcopraxr top. The most selective was Chalcopraxr top, especially in connection with important predator Nemosoma elongatum). The least selective was Chalcowitr, which is also the only of all pheromones, which attracts eight-toothed spruce bark beetle (Ips typographus). With regard to selectivity, the price and durability of each pheromone, Chalcopraxr top is recommended for using in practice.