Insect repellents do not work on which insect?

• A. Ants
• B. Bees
• C. Mosquitoes
• D. Fleas

Answer: (B)

Repellents work by masking or altering the cues insects use to find a person, especially those that bite or land on us like mosquitoes and fleas. They’re formulated to deter pests that feed on humans, so they’re effective for mosquitoes and, to some extent, fleas. Bees, however, aren’t reliably repelled by these products because they don’t respond to the same cues the repellents target, and their behavior isn’t driven by the same host-attraction signals. So, the best choice is bees—they’re not effectively kept away by typical insect repellents. Ants are less about skin protection and more about other deterrents, so they aren’t the intended target of these repellents either, which is why bees is the correct answer.