Free fentanyl test strips are now available across Wisconsin.
The Wisconsin Department of Health Services now has a tool on its website where you can search places to find the test strips.
The department says drugs mixed with fentanyl are the leading cause of overdose deaths in Wisconsin.
Fentanyl test strips are dipped into drug residue dissolved in water.
Within minutes, a person can know whether the drug contains fentanyl.
A tiny amount – as little as two grains of salt – is enough to kill someone.
