The investigations were conducted to compare the effect of broad bean protection using non-chemic preparations (Polyversum and Bioczos BR – prepared on the basis of garlic extract) and artificially synthesised preparations (Vitavax 200 FS, Decis 2,5 EC and Fastac 100 EC) on harmfulness of Sitona beetles and larvae. Chemical protection proved to be far more efficient in limiting harmfulness of Sitona beetles than protection with Bioczos BR preparation. However, three-time application of this preparation revealed a significant decrease in the percent of injured leaves. Fourtime application decreased both feeding area caused by the beetles and the loss of leaf blade. The applied broad bean protection did not affect significantly the degree of verruca injury by Sitona larvae.