The Drug Enforcement Administration is warning of a new trend with fentanyl that targets children.
The pills, powders, and even blocks that look like sidewalk chalk are brightly colored - and the DEA says that's meant to make them look like candy or something fun for kids to try.
But fentanyl is incredibly dangerous - it's more potent than heroin or morphine and just coming in contact with it can have serious consequences.
The new variety of fentanyl has been found - and seized - in 18 states, including in the DEA's St. Louis division.
Agents say fentanyl remains the deadliest drug threat in the country, with data showing two-thirds of overdose deaths being caused by synthetic opioids like fentanyl.
The DEA has a fentanyl awareness page to provide more information about the threat.