You could be right, I do have an inquiring mind.
One of the main problems with mossies, apart from them wanting blood, is they transfer disease.
http://www.nhs.uk/Conditions/W...
It must be very difficult to deal with, and my thoughts were also on how many other insects or wildlife are affected.
In the link you provided, under #3 "What is larvaciding":
Chemicals used vary from specialized pesticides to insect growth regulators (IGRs) to environmentally friendly bacteria-based biological larvicides.
The environmentally friendly bacteria-based biological larvicides must kill off other larvae.
We don't have many mossies, but they are here. My water barrel which takes water from a shed roof is a breeding place for them, I guess the hole which the pipe goes into it could be sealed but as they aren't a huge problem at least they will be food for some birds. I've seen eggs in my pond, and in other places where small amounts of water has stood.
