On 13.04.2022, the Ministry of Agriculture of Russia registered a new biological pesticide of the company "BIOTA" for forest protection. The product "DEFILIGNUM" (from Lat. "defendo" – to protect and "lignum" - tree) registration number 805-01-3621-1 was created on the basis of the bacterium Bacillus Thurengiensis and is intended, first of all, to combat caterpillars of unpaired and Siberian silkworms, other forest pests, as well as meadow moth (in agriculture). The product is favorably characterized by a high concentration of the active substance, which will ensure efficiency in use and ease of transportation.