1. The active ingredient in this concentrate formula provides a rapid knockdown of insects, targeting the insect's central nervous system. Pyrethrin is a strong insect repellent yet has a low toxicity to warm blooded animals. Pyrethrins originate from Chrysanthemum flowers, making it a natural ingredient. It is environmentally friendly and decomposes quickly. It can be used up to the day of harvest on vegetables, fruits, roses, flowers, and ornamentals. Learn More