Today, many farmers are using insects to control insects.
The most popular are very small wasps. Two kinds of wasps are used.
One is the microplitis cropeipes.
It attacks insects in the helioithis group. The second wasp is the cotesia margeneventris. It is used against a number of insects, especially those of the noctuid family.
They includethe fall armyworm, the beet armyworm and the cabbage looper.