Re: Cleaning your veggies
We wash them before storing and wash before eating/cooking/consuming. But the sort of things you are describing , we have to dip them in acid . Yuck , I am not going to look at the veggies and fruits the same way from now on. 
Never thought about it like that and never saw anything like that happening . But I am never in the store when they are doing their fruit and veggie merchandising. 