Rentokil Initial, a pest control firm, has warned of softer demand in North America, its biggest market. The company now expects an annual adjusted operating margin for North America of 18.5%-19%, down from its previous guidance of about 19.5%. This follows a 2.5% decline in its U.S. products wholesale distribution business in Q3. Despite this, Rentokil's total group revenue for Q3 rose nearly 60% to $1.70 billion, offset by strong performance in other regions.