Pollen beetle (Meligethes aeneus F.) (PB) is one of the most serious pest in rapeseed cultivations in Poland and in other European countries. The pest is known because of its high metabolic potency towards various toxins. Constant and strong selective pressure of different insecticides used to control this pest, has resulted in resistance of PB to many active substances. In connection with this situation, constant monitoring of pollen beetle susceptibility level to all recommended active substances of insecticides is necessary. The objective of the study was to determine the effectiveness of active substances, most often used in Western Poland for PB control. Resistance of pollen beetle to some pyrethroid active substances and organophosphorous insecticide – phosalone and high susceptibility to chlorpyrifos-ethyl was found. Resistance of pollen beetle requires constant insecticide susceptibility level monitoring and using IRM strategy.