What is the primary function of insect growth regulators in termite control?

The primary function of insect growth regulators (IGRs) in termite control is to disrupt termite growth and reproduction. These substances interfere with the normal development processes of insects by mimicking hormones or blocking the hormonal signals necessary for growth and maturation. When termites are exposed to IGRs, it prevents them from reaching maturity and reproducing effectively. This disruption ultimately leads to a decline in the termite population over time, as affected individuals cannot develop into fertile adults capable of breeding.

This approach is particularly beneficial for long-term control strategies, as it targets the life cycle of the termites rather than relying solely on chemical means to kill adult termites instantly. This makes IGRs a more sustainable option within an integrated pest management system.