David Neal, 61 of Middletown, Ohio sold fake urine to help people pass workplace drug tests and he faces up to six years in prison when he returns to Pittsburgh for sentencing May 13.

Some of Neal's products, including "Magnum Unisex Synthetic Urine" and "Urine Luck," claimed to thwart tests overseen by the Substance Abuse and Mental Health Services Administration.

His products were designed to flush drug residue from a person's system. The government considers those products to be drugs, but Neal didn't identify the substances that way on labels or in advertisements, prosecutors said.

He could face a fine of up to $350,000 and probation after any prison term that may be imposed.