Metho, short for methylated spirits, is commonly used as a household cleaner, fuel for camping stoves and as a solvent in various industries. However, depending on the country, it may be known by different names and synonyms. In the United States, metho is referred to as denatured alcohol, while in Europe it may be called spiritus or bioethanol. Other common synonyms for metho include wood alcohol, denatured ethanol, and rubbing alcohol. Whatever the name, it is important to use metho and its substitutes safely and as directed, to avoid any harmful side effects.