Keep in mind, however, that mosquitoes can migrate several miles from where they develop. Even successful control of mosquito larvae on your premises may not result in reducing mosquito numbers or biting activity. See Table 1, below, for ways to reduce mosquito populations in a given situation. What to Do to Reduce Mosquitoes Ponds Stock pond with fish, or use Bacillus thuringiensis subsp. Remove excess vegetation.
Swimming pools Keep water off cover.
Maintain water quality at all times. Tree holes Fill hole with sand or mortar. Plastic pools Drain water when not in use, or cover so mosquitoes cannot lay eggs. Containers Empty water. Store in an inverted position.