Insects and other organisms communicate through semiochemicals, such as pheromones and allelochemicals, etc. These chemicals control some of the important functions needed by insects to survive which include mating, aggregation, foraging, defense and oviposition. Precise identification and analysis of these chemicals are essential in ecological research and in sustainable pest-management devices. This paper presents the primary methods of insect semiochemical detection, which are pheromones. It encompasses few older methods such as gas chromatography and mass spectrometry and electroantennography. Newer sensor methods include electrochemical, piezoelectric, optical, biosensors and cantilever nanosensors. The short-term uses of these technologies in agriculture are also mentioned in the review, as they are primarily applied in integrated pest management, monitoring population, and controlling pests in an environment-friendly manner.