Depends on the job. They do make you blow threw a breathalyzer before you go out to work daily
Thier mouth swabs are cheap. You could smoke a joint and go swab and come up clean. But also being cheap there is false positives. They are aware of these false positives and will not count it against you.
They do. Its the one they put in your mouth. Be straight up with them. If thats all it is youll be good.
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