Where I live it is a fact of life. You pretty much know prices cause they paste them all over your door all year long. My workers go home for the winter be it a two week vacation, one month and one guy is not returning until March.
They work hard. I have never had a client say one word to me but I do let them know that these are employees on a payroll.
Are there former H2B workers out in the wild? Absolutely they are out there. I am sure there are also what we fondly call wetbacks too. The former is less of a threat than the wild H2B landscape worker cause they are often well trained. I think however this is getting to be less and less of a problem