31. Only a handful of small gum companies still use chicle , including Glee Gum, Simply Gum, and Tree Hugger Gum. 32. In 2014 Peppersmith disappointed many customers by switching from a natural chicle gum base to an industry-standard polymer gum base. 33. In 1912 Millward declared that the jungles of Guatemala were the richest in the world with their hardwoods, rubber and chicle . 34. Synthetic gums were first introduced to the U . S . after chicle no longer satisfied the needs of making good chewing gum. 35. They are known for their hits such as " El Chicle ", " El Tizon ", and " Camar�n Pelao ". 36. Most gums have stuff like chicle or plastic-like substances to make them elastic, for the pleasing feeling for the chewer. 37. American Chicle was acquired by the pharmaceutical company Warner-Lambert in 1962; Warner-Lambert was acquired by Pfizer in 2000. 38. The tree ( " Manilkara zapota " ) is the source of chicle , a white sap originally used in chewing gum. 39. The Xcalak village was the only village in the territory that did not depend on mahogany and chicle ( used for chewing gum ). 40. By the 1960s, most chewing gum companies had switched from using chicle to butadiene-based synthetic rubber which was cheaper to manufacture.