Hi Santarosa, welcome.

I believe black soldier flies are common in the Philippines and your situation seems ideal for using them. You may find some good information in this article: http://www.cals.ncsu.edu/waste_mgt/smithfield_projects/phase2report05/cd,web%20files/A2.pdf

The BSF larvae are proven to be a good supplement for swine and many other animals. Please let us know if you try working with them.