Regent 50 SC is a broad-spectrum systemic insecticide produced by Bayer (and marketed by BASF in some regions), widely used to control a variety of chewing and sucking insects in agriculture and for termite control. It is highly valued for its efficacy at low doses and its ability to manage pests that have developed resistance to other chemical classes.
Product Composition and Mechanism
- Active Ingredient: Contains Fipronil 5.0% w/w.
- Chemical Group: Belongs to the phenylpyrazole family (IRAC Group 2B).
- Action Type: It acts as a systemic insecticide with both contact and stomach poisoning activity. It disrupts the insect’s central nervous system by interfering with GABA-regulated chloride channels.
- Plant Growth Enhancement (PGE): According to Bayer and BASF, Fipronil can improve crop vigor, root development, and yield even in the absence of heavy pest pressure.




