How many signal words are commonly found on pesticide labels?

• A. Three
• B. Two
• C. Four
• D. Five

Answer: (A)

Signal words on pesticide labels are a quick way to convey how toxic or hazardous the product is, so users know the level of precautions needed. There are three commonly used: Danger, Warning, and Caution. The word chosen reflects the product’s acute toxicity: Danger is used for the highest level of hazard, Warning for a moderate level, and Caution for relatively low hazard. This three-tier system lets you quickly assess risk, select appropriate personal protective equipment, and follow the correct first aid and handling procedures. The other options don’t fit because pesticides use these three standard signal words to cover a range of hazards, rather than just two or more than three.