Burger King's product packaging has undergone many changes over the years. Unlike McDonald's, the company never used the clamshell style box made of Styrofoam, so when the environmental concerns over Styrofoam came to a head in the late 1980s, the company touted its use of paperboard boxes for its sandwiches. When McDonald's moved to eliminate its styrofoam packaging, Burger King ran several sarcastically-worded ads in national newspapers stating that it had always wrapped its sandwiches in waxed paper; they welcomed McDonald's "to the club". To cut back on the amount of paper that the company used, the paperboard box was mostly eliminated in 1991; it was replaced with waxed paper. Paperboard boxes are still used for its "finger food" products like Chicken Tenders and Fries, French toast sticks, and desserts.