That includes a multitude of vehicles including school buses, shuttle buses, beverage distributors, waste management vehicles, and city and county transit buses. But the best candidates for most providers will be relatively small firms that lack the staf f ing and know-how to set up programs themselves. Word of mouth is the next best way to get the word out. One employer talks to another employer, who talks to another, to find out who's using who. Several collectors refer companies that they work with to Willis.
Providers can also market their services directly to drug testing labs.