[ac29]

I dont think it follows either, but at least when you cook from scratch you have control over how much stuff is washed before you use it. That's not the case for more processed food.

I'm not suggesting processed food necessarily uses poorly washed vegetables, just that its out of one's control - it certainly strikes me as possible that industrial scale processes might do a better job at removing chemical residues than a typical home cook giving store bought produce a quick rinse.