For which of the following pests is baiting considered an effective control method?

Baiting is particularly effective for controlling ants because the bait attracts foraging ants, which then carry it back to their colony. This allows the active ingredient in the bait to be shared among the colony members, including the queen, leading to a significant reduction in the ant population over time.

In contrast, while baiting can be used for bed bugs and some termite treatments, it is typically not the most efficient or straightforward method for these pests. Bed bugs often require direct treatment methods targeting individual insects and their hiding spots, and termite baiting systems can be effective but usually require specific setups and monitoring that differ from typical baiting for ants.

Therefore, since baiting is recognized as a primary and effective method for controlling ant populations, it is the most suitable answer in this context.