Clint Weiler, who also wrote the treatment for the film and worked on the basic characterization, had this to say about Bath Salt Zombies.
Director Dustin Wayde Mills also offered his thoughts.
Present day, United States... The bath salts epidemic facing the southern and mid-western US has been stifled by an unprecedented government crackdown. Head shops have been raided and shut down, component imports from the UK, India and China have been completely stopped, and aggressive penalties for users have been instated.
This has led to a tremendous amount of surplus stock hidden by black market dealers, and a migration of those dealers (and in turn, users) to the northeast and other areas. In New York City, potent strands have surfaced and have attracted the most devoted bath salt junkies. In an attempt to outsell said strands, a young aspiring chemist has developed and even stronger batch... but something has gone horribly wrong.
The new ultra potent bath salt batch has revealed a major side effect... It turns users into violent flesh seeking "zombies." When the zombies are high on bath salts, they are completely unaware of their actions and they seem to float in and out of consciousness. When they kill / eat people, they are unaware of what has happened when they come down off the drug. The drug is also more addictive than other forms, and users feel the need to stay constantly high due to the fact they become incredibly feeble when sober. They come down HARD.
FUN FACTS ABOUT THE BATH SALT EPIDEMIC:
Traditional "bath salts" consist of a combination of amphetamine-like chemicals, mainly mephedrone, MDPV and methylone. Users of the drug have reported feeling incredibly hot, which is why many get naked (in this case, it gives us cause for female nudity). They also develop superhuman strength (it can take five or six men to restrain them) and become so manic and delusional that the term "excited delirium" is being used by the medical community to describe their mental state. The shocking wave of attacks has sparked fears of a real-life zombie outbreak in the south. This led to The Center for Disease Control and Prevention releasing a statement saying it is not aware of any virus that can cause zombie-like behavior. A spokesman said: "MDPV is an illegal and harmful drug and stiff penalties are in place for people who possess or supply it. Drugs ruin lives which is why we are taking tough action against dealers and criminal gangs and helping people to free themselves from the cycle of dependency."