Which is not a type of pest that poisonous bait formulations are used to control?

Poisonous bait formulations are specifically designed to target certain types of pests by attracting them to the bait, which they then ingest. Ants, mice, and termites all fall into categories where bait can effectively control their populations.

Ants are commonly controlled with bait formulations that attract them to the poison, which they carry back to their colony, effectively eliminating the source of the problem. Similarly, mice are adept at scavenging and can be trapped with bait that is appealing to them, allowing for targeted elimination in a habitat where they are causing issues. Termites can also be targeted with specific bait systems that disrupt their feeding and reproductive cycles, leading to colony collapse.

In contrast, centipedes do not typically respond to bait formulations in the same way that these other pests do. They are predatory and primarily feed on other insects rather than consuming bait, making bait formulations ineffective for controlling centipede populations. Therefore, understanding the feeding behaviors and ecological roles of these pests is critical for effective pest management, which is why this option is identified as the one not typically controlled with poisonous bait formulations.