NAPHTHALENE IS AN ORGANIC COMPOUND WITH FORMULA C10H. IT IS THE SIMPLEST POLYCYCLIC AROMATIC HYDROCARBON. IT IS BEST KNOWN AS THE MAIN INGREDIENT OF TRADITIONAL MOTHBALLS. NAPHTHALENE HAS BEEN USED AS A HOUSEHOLD FUMIGANT. IN A SEALED CONTAINER CONTAINING NAPHTHALENE PELLETS, NAPHTHALENE VAPORS BUILD UP TO LEVELS TOXIC TO BOTH THE ADULT AND LARVAL FORMS OF MANY MOTHS THAT ATTACK TEXTILES. OTHER FUMIGANT USES OF NAPHTHALENE INCLUDE USE IN SOIL AS A FUMIGANT PESTICIDE, IN ATTIC SPACES TO REPEL ANIMALS AND INSECTS, AND IN MUSEUM STORAGE-DRAWERS AND CUPBOARDS TO PROTECT THE CONTENTS FROM ATTACK BY INSECT PESTS.