What does a janitorial sale rep make?

Where is he working, is he a good salesman, are the pricing good, is the commission good. How many hours will he work.

I know many around Atlanta making 40,000 or 50,000, I know others, that quit because they can't earn 100 a week

If they are on commission, it would depend on sales. How good are they? What market is available to them? Prior sales experience?