DERATIZATION - extermination of rodents (mouse, rat, rat, etc.) DISINSEECTION - elimination of insects (cockroaches, bedbugs, ants, flies and other troublesome insects, etc.) DISINFECTION - elimination of viruses, bacteria, fungi, etc.. DISPOSAL OF UNDESIRABLE GREEN CHEMICAL PROTECTION OF PLANTS GASIFICATION AND SPRAYING OF STALLS, HALLS, etc.. ...