Insecticides

Insecticides from the Latin «insectum» — an insect and «caedo» — I kill, chemical means of combating harmful insects. Insecticides differ in the way the insect enters the body:

• intestinal, entering the body of an insect through the mouth;
• contact, penetrating the body of an insect through the skin;
• systemic, or systemic, are absorbed by the roots and leaves of plants, move through the vascular system with nutrients and make plants poisonous to parasitic insects;
• Fumigants, or respiratory, enter the body of insects in a vapor or gaseous state through the tracheal system during respiration.

This division is rather arbitrary, since most insecticides can penetrate the insect’s body in several ways at the same time.