Larviciding is the process of controlling mosquitoes when they are in the larval or pupal form. Controlling mosquitoes when they are in the water is an effective approach; because the mosquito is somewhat isolated and known breeding sites can be recorded and routinely monitored. For many districts, this is the bulk of their operations. The following are examples of habitats that are routinely monitored and treated when necessary:
- Roadside ditches
- Catch basins
- Flooded areas
- Buckets, tires, boats, bird baths, or any other item that is collecting water