If the pond is stagnant, I would throw some used oil bottles in there, filled with water so they sink.
If it is not stagnant, and it doesnt dry up in dry seasons, buy the cheapest guppies you can find at the pet store. Get as many males and females you can afford, and let them go in the pond.
Guppies have a great appetite, plus they multiply like cockroaches.
It might take a summer, but they will control the skeeters..
Also, look around, make sure there is no standing water. Rain gutters that are drooping a little is an excellent place for the little buggers to breed. As are old pots, tin cans, beer cans, old tires, anything that can hold water.