Diploma thesis deals with the protection of spruce stands from spruce bark beetle (Ips typogrpahus). Describes spruce bark beetle as a significant biological pest. Since the attraction of pheromone is influenced by the presence of anti-attractants originating from terpenes from the host crust, this work also deals with the effects of chemicals released from the spruce (Picea abies), which are used to protect against spruce bark beetle. The experimental anti-attractive mixture was based on a commercially produced IT REP evaporator in which verbenone was replaced with 1,8-cineol. In the experiment, the inhibitory properties of 1,8 cineol in the olfactory gushing environment, which is part of the terpenes emitted by a common spruce, are shown. 1,8-cineoles have stronger inhibitory effects in admixture with anti-attractive IT REP than verbenone in the same mixture.