By applying Agnihotra ash, the population was diminished and it disappeared step by step in 2 weeks.
Plantations, using conventional methods, have a high incidence of ants (Utaca), which can destroy a leafy tree in one night.
Many government agencies, which give technical support to the farmers, tried to control these ants by use of: 
- pesticides
- mechanical methods (such as placing transparent plastic at the foot of each tree)
- non conventional methods (such as burning the nests with gasoline)
All were without any positive results  -  The population was back in 15 days. 

Observation: Eng. Carlos Jauregi Sanchez, Ministry of Presidency of the Republic of Peru