You want to hire illegals, that's your biz, but it's always nice to at least make sure that they understand a couple of words of English like , bacteria, food born illness, sanitize and maybe even HACCP. I used to deliver to them and saw way more than I wanted. Hispanic washing lettuce in a triple sink with a bin of raw chicken sitting on the same drain board. Bins of crab meat, without any ice or lid, sitting on top of garbage cans that contained garbage, (they were making crab cakes out of those bins). Once saw lettuce guy make a wee wee in the floor drain of the sink where he was washing veggies. Went right back to work. Back door was usually wide open and flies were on everything.
Pros: Sites like this might warn people away
Cons: Sanitation is a totally ""foreign"" concept