Legal highs similar to illegal recreational drugs have led to deaths in the UK. Dealers find new legal compounds through small changes to illegal chemicals' structures and have compounds produced in China. Different drug classes correspond to varying criminal penalties for possession and dealing in the UK, with Class A drugs like ecstasy and cocaine carrying the harshest punishments. An anti-drug poster depicts the unhygienic lifestyle of meth addicts to warn of addiction through its setting in a dirty public bathroom.