Which tactic is NOT typically included to control mosquitoes in their immature stages?

In controlling mosquito populations, particularly in their immature stages (larvae), certain tactics are more appropriate than others. Source reduction, chemical agents, and biological control agents are all strategies designed specifically for targeting mosquito larvae.

Source reduction involves eliminating or minimizing breeding sites where mosquitoes lay their eggs, such as standing water. This is an effective long-term strategy because it addresses the root of the problem by preventing mosquitoes from developing in the first place.

Chemical agents refer to larvicides, which are chemicals specifically formulated to target mosquito larvae without affecting adults. These are employed strategically in areas where source reduction is not feasible or practical, further supporting effective larval control.

Biological control agents may include natural predators or pathogens that specifically target mosquito larvae, offering a more eco-friendly approach to controlling these pests.

On the other hand, space spraying insecticides is a method used to kill adult mosquitoes, not immature stages. This tactic involves applying insecticides in a mist or aerosol form over a wide area and is aimed at reducing adult populations rather than focusing on larvae. Since the question is about controlling mosquitoes in their immature stages, space spraying is not relevant in this context. Thus, it stands apart from the other options that directly address larval control.