Pest control is carried out on the territory of Dolgaya Polyana Nature Sanctuary where the sanctuary’s staff have found several conifers affected by leaf-eating insects. In particular, juvenile pines were eaten by aphid and spruce spider mite. Small lesions were treated by the sanctuary’s staff. Bus as for the protection of big trees such as the Siberian spruce that decorates the Molostvovye Manor House and is the nationwide natural monument, the Administration of the Sanctuary sought help from the foresters of the Tetyushi Forestry.