Stomach Poisons must be swallowed to cause death

• A. They evaporate quickly
• B. They must be swallowed to cause death
• C. They must be sprayed on pests
• D. They are pre-emergent

Answer: (B)

Stomach poisons are designed to cause harm after they’re swallowed. Their toxic effect relies on the pesticide being ingested so it can pass through the digestive system, be absorbed into the bloodstream, and disrupt essential bodily processes. If exposure happens by spraying, inhaling, or contact, these products won’t work in the same way, because their primary action is through ingestion. That’s why the statement that they must be swallowed to cause death correctly describes how stomach poisons operate.

The other options describe different modes or uses: evaporating quickly implies a volatile product acting by inhalation, sprayed on pests points to a contact poison, and pre-emergent refers to soil-applied products intended to prevent germination, not ingestion by pests. In practice, stomach poisons are often delivered via bait or contaminated food to ensure ingestion.