1. Substances that kill pests
Pesticides
Substances that kill pests

2. Types of pesticides
About 900 active ingredients in 20,700 products currently sold in world markets
Insecticides: kill insects
Fungicides: kill fungi
Herbicides: kill weeds
Nematicides: kill nematodes
Rodenticides: kill rodents (mice, rats)
Molluscicides: kill molluscs (snails, slugs)
Microbicides: kill microbes

3. Types of insecticides Plant extracts (nicotine, pyrethrum, neem, etc)
Microbial extracts (BT,abamectin, sphinosad)
Insect growth regulators (hexythiazox, etc)
Chlorinated hydrocarbon (DDT, Aldrin, etc)
Organophosphates (chlorpyrifos, diazinon, dimethoate, etc)
Carbamates (many)
Synthetic pyrethroids (cypermethrin, deltamethrin, etc)
Chloro-nicotinyl (imidacloprid, thiacloprid, etc)
Other new types (few)

4. Types of fungicides Inorganic (copper, sulfur, Bordeaux mix)
Azole (difenoconazole, triadimefon, etc)
Strobin (kresoxym-methyl, trifloxystrobin, etc)
Dithiocarbamate (mancozeb, metiram, etc)
Benzanoid (metalaxyl, etc)
Others