Which statement is true about pyrethrin safety?

• A. It is derived from chrysanthemums
• B. It is not derived from chrysanthemums
• C. It is synthetic
• D. It is illegal to use on dogs

Answer: (A)

Pyrethrins are natural insecticides derived from chrysanthemum flowers. Because they come from chrysanthemums, the statement that they are derived from chrysanthemums is true. They are not synthetic pyrethrins themselves (though there are synthetic counterparts called pyrethroids), and they are not illegal to use on dogs—many grooming products contain pyrethrins when used as directed. While generally safe with proper use, some animals, especially cats, can be sensitive and irritation or adverse reactions can occur if the product is misapplied or overly concentrated.