Do what we've done. Hired a retired gentleman who lives on our street. He does a NICE job, doesn't charge much, it gives HIM something to do AND some extra $$.
Well, I do have a Mexican gardner. He is not illegal. He does go back to his farm in Mexico during the winter.
He is a wonderful guy and we adore him.
I have not investigated his helpers and can't say that it has worried me much.
There is an older gentleman on our street but he is sitting in his chair at the moment and snoring.