Most often, we do a urine drug screening upon employment. After hired, we do saliva drug screenings.
Answered by Niagara Bottling
Most places now do mouth swabs, due to people using fake urin.
Urine drug test
Answered - Blower/ Filler Machine Operator, Quality Checks (Former Employee) - Columbus, OH
Urin to get hired,and random mouth swabs,monthly