The present invention relates to a composition comprising at least one biological control agent selected from the group consisting of Bacillus subtilis AQ713 (NRRL Accession No. B-21661) and Bacillus subtilis AQ30002 (NRRL Accession No. B-50421), and Bacillus subtilis AQ 30004 (NRRL Accession No. B-50455) and/or a mutant of these strains having all the identifying characteristics of the respective strain, and/or a metabolite produced by the respective strain that exhibits activity against insects, mites, nematodes and/or phytopathogens and at least one insecticide selected from the group consisting of acetylcholinesterase (AChE) inhibitors, GABA-gated chloride channel antagonists, chloride channel activators and nicotinic acetylcholine receptor (nAChR) channel blockers in a synergistically effective amount. Furthermore, the present invention relates to the use of this composition as well as a method for reducing overall damage of plants and plant parts.