List any three effective methods for controlling mosquitoes.

The effective methods for controlling mosquitoes are:

1. Elimination of breeding places for mosquitoes.
2. Spraying on stagnant water with Kerosene or some other greasy oil to kill larvae and pupae. Spraying DDT and other insecticides to kill adult mosquitoes.
3. Biological control by introducing certain fishes like Gambusia which selectively devour on mosquito larvae.