We've experienced an unusually wet spring in many parts of TX, and the mosquitos took full advantage of the countless puddles of water; from dog bowls to discarded tire and anything else that would hold water for a few days. Needless to say, FHM are not an option in many sites that mosquito larvae find most hospitable. It's not always practical or prudent to treat with adulticide insecticides (products that target the adult fliers), and treating every puddle with an oil-coating isn't feasible or environmentally acceptable.
Enter mosquito larvacides, particularly the biological types (aka "bt" based products).
I've had very good results treating puddle-holding areas behind my back yard with Aquabac 200G (granular) and Aquabaq XT (liquid). Both products target mosquito larvae prior to their emergence as adults - and appear to hold in an active state for several weeks post-application.
This approach might offer a solution in situations where FHM and adulticides aren't feasible.
