Despite strong demands of environmental and economical friendly methods, pesticide use largely dominates in the framework of IPM strategy (Integrated Pest Management). The biological control, based on natural biological processes and materials, could be an alternative and efficient approach. Many of these processes and/or materials involve chemical interactions. Chemical ecology deals with the intriguing chemical mechanisms which help control intra- and interspecific interactions among living beings. Research of chemical ecology is concerned with the identification and synthesis of the substances which carry information and with the developmental, behavioral, and ecological consequences of chemical signals. The goal of the workshop "Check-in…