There was not anything in my post which could be fairly characterized as criticism. Don said he located a "product" that was inexpensive, effective, and EPA approved. What was going through my mind was: why wouldn't the station owner get this product himself and save himself the expense of paying someone else. It's a reasonable question. Ok, the owner might not be aware of the product now. But if he did hire the services of someone, he most certainly would ask what that person was putting on his drive. Then if he is happy with the results he might just go to the source of the product himself.

Jay