They cost four or five times as much as urine tests and are almost as easy to defeat.
Buisness is only testing to get reduced workers comp rates. Unless the law mandating reduced workers comp rates for companys that test is updated to require hair tests these tests are going nowhere.
The fact is that if drug tests worked many industries would have to shut down for lack of workers. (gotten any 'crete work done lately?)
Isn't that the truth! Potheads have been building this country (in a literal sense)for twenty+ years. The guys who built my house were stoners to the nth degree. That said, they did an outstanding job. I'd hire them again, potheads or not.