Pests in different kinds are found throughout the planet. Whether they are the bacteria, insects, mites, snails, viruses, nematodes, rodents or birds, all come under the head pest if they are found in unwanted areas or in unnecessarily huge numbers. These pests have the potential to wipe out interiors and the exteriors of the house.
Even out ancients also understood the importance of pest control. During those days, pesticides available from natural sources were used. With the arrival of the industrial age and growth of population, requirement for food and raw materials from natural sources increased manifold necessitating more areas coming under commercial agriculture. It is during this period, the chemical pesticides or synthetic pesticides proved their worth as they not only could remove pests from large areas in no time, the left overs also could act as repellents too for some period of time.
Chemical pesticides are divided into two groups as per their potency. The broad spectrum pesticides can eliminate or incapacitate a wide array of species while the narrow spectrum ones destroy only a small group of species.
However, the strengths of these pesticides is their biggest weaknesses. These chemicals can act like poisons with destructive results, on harmful and friendly animals alike.