Key Takeaways Rentokil Initial shares tumbled Wednesday after the pest-control company warned it would take a $104.5 million profit hit this year. The pest-control company blamed weakness in its North American business and currency fluctuations. Rentokil said that the rise in the pound's price versus the U.S. dollar will create a headwind for the firm. Rentokil Initial (RTO) shares traded in the U.S. cratered Wednesday after the pest-control company warned that slow sales in North America and negative curre ...