The corpses of the flying insects have gone through multiple mutations, carrying unknown pollutants. If they fall into the water, the base can't even guarantee that it can completely eradicate the virus, nor clear it before the water is needed.
Because to pick up the planting plan, large-scale use of water is unavoidable. Once contaminated water infects crops, the whole country will be affected.
Unfortunately, every dormant nest is located at the water sources, nationwide. It's exactly because of this that the country has remained inactive even though its combat power hasn't significantly diminished.
The characteristics of the flying insects are quite peculiar.
They are highly polluting, humans cannot touch them, they eat everything but do not eat living organisms. Their most formidable ability is that they can reproduce while feeding, multiplying in numbers every time they move.
Moreover, they never operate alone.
