Federal and state drug possession laws make it a crime to willfully possess illegal controlled substances such as marijuana, methamphetamine, cocaine, LSD, "club drugs," and heroin. These laws also criminalize the possession of "precursor" chemicals used in drug cultivation and manufacturing, as well as certain accessories related to drug use. Drug possession laws vary according to drug type, amount, and geographic area of the offense. Possession of small quantities may be deemed "simple" possession, while possession of large amounts may result in a charge of presumed "possession with intent to distribute."