1. A method of combating pests living in the soil and / or preventing their occurrence in useful plants, comprising introducing a compound of formula I at the place of growth of a useful plant or treating its plant material for propagation with a compound of formula I, where-B-B-B- is -C = NO-, -C = N-CH-, -C = CH-O- or -N-CH-CH-； L is a direct bond or methylene； Au is CH, or one of Au is is CH, and the other is N； X is a group X； R is C-C1-6alkyl, C-Haloalkyl or C -Cycloalkyl； R is chlorodifluoromethyl or trifluoromethyl； each R is independently bromo, chloro, fluoro or trifluoromethyl； R is hydrogen, halogen, methyl, halogenmethyl or cyano； R is hydrogen； or R and R together form a 1,3-butadiene bridging group equal to 2 or 3.2. The method of claim 1, wherein the pest dwelling in the soil is a corn root beetle. The method according to claim 1, where the pests living in the soil are wireworms. The method according to claim 1, wherein the pests living in the soil are larvae, in particular, larvae of a raspberry (e.g. Phyllophaga sp., Diloboderus sp., Popillia japonica). The method according to claim 1, where the pests living in the soil are termites (in particular, in relation to sugar cane). The method according to claim 1, wherein the pests living in the soil are earthen shields (for example, Scaptocoris sp.). The method according to claim 1, wherein the pests living in the soil are winterworm caterpillars (for example, Agrotis sp.). The method according to claim 1, wherein the pests living in the soil are bipedal centipedes (for example, Julus sp.). The method according to claim 1, where the pest living in the soil is the larva of a large reed drill1. Способ борьбы с обитающими в почве вредителями и/или предупреждения их появления в полезных растениях, включающий внесение соединения формулы I в место произрастания полезного растения или обработку его растительного материала для размножения соединением формулы I,где-В-В-В- представляет собой -C=N-O-, -C=N-CH-, -С=
