Which pesticide may be toxic to deer?

• A. Mexacarbate
• B. Carbaryl
• C. Sevin
• D. Carbofuran

Answer: (A)

Pesticides that disrupt nerve function by inhibiting acetylcholinesterase can be toxic to deer if they eat treated plants or drink contaminated water. Mexacarbate is a carbamate insecticide known to pose toxicity to deer through such exposure. When deer encounter residues on sprayed foliage or in water, they can show signs ranging from drooling and tremors to more severe effects, depending on how much they ingest. While other options listed are also nerve-acting carbamates and can be harmful, the material commonly notes mexacarbate as a pesticide that may be toxic to deer in forestry contexts. The practical takeaway is to limit deer exposure by following label directions, avoiding application when deer are present, and establishing appropriate buffer zones and timing.