What is Nucleopolyhedrovirus is being used for nowadays?

Explanation

Nucleopolyhedrovirus are Baculoviruses.
a) They attack insect and other arthropods.
b) They are species-specific, narrow spectrum insecticides.
c) They have no negative impact on plants, birds, mammals, fish and even non-target insects.
d) This is especially desirable when beneficial insects are being conserved to aid in an over all Integrated Pest Management (IPM) programme, (or) when an ecologically sensitive area is being treated.