A clandestine laboratory is used for the primary purpose of illegally manufacturing controlled substances, such as methamphetamine. Clandestine labs are typically small and use common household appliances, glassware, and readily available chemicals. While some clandestine laboratories may be located in business areas, they are most frequently located in residential or rural areas.

There are many different methods for producing methamphetamine. Each method has its own built-in dangers. Many of the chemicals used are caustic or corrosive and some of the processes create poisonous fumes. Additionally, many of the chemicals can be found in common household items such as lantern fuel, cleaners, acetone, muriatric acid and diet pills.