I agree, but, "rich people" eat at mcdonalds, and buy food at normal grocery stores. "Rich" being able to afford a $100 detector. So while not perfect, it wou

I agree, but, "rich people" eat at mcdonalds, and buy food at normal grocery stores. "Rich" being able to afford a $100 detector. So while not perfect, it would perhaps force suppliers, chains, and such to clean up their act. To test food themselves, otherwise a random person with a detector may catch something. Outside of lead, arsenic is another biggie, often in rice. I'd love that to be tested, at home, per meal.