What is a key difference between a repellent and an insecticide?

The distinction between repellents and insecticides lies in their primary functions and mechanisms of action. Repellents are designed to deter pests from approaching or landing on treated surfaces. They create a barrier that makes the environment less attractive or palatable to the insects, thus preventing infestations or bites. Common examples of repellents include DEET and citronella, which work by masking scents that attract insects.

On the other hand, insecticides are formulated to kill insects. They contain active ingredients that disrupt vital biological processes within pests, leading to their death. This can involve affecting their nervous system, metabolism, or growth patterns. Insecticides are used when the presence of pests is already established and action is needed to reduce their population.

Understanding this distinction is crucial for effective pest management. By knowing when to use repellents versus insecticides, pest control professionals can apply the appropriate strategy based on whether they aim to prevent pest contact or to eliminate existing infestations.