**Acknowledgements**

This chapter was performed under the scope of the NETA project: New Strategies in Wastewater Treatment (POCI-01-0247- FEDER-046959) funded by PORTUGAL2020.

*The Insects as a Workforce for Organic Fertilizers Production – Insect Frass DOI: http://dx.doi.org/10.5772/intechopen.100144*
