“There are some bugs (mites) that are so small that once they infest lettuce, they are difficult to spot even using a lightbox.”
If the bugs are that small, do we really have to worry about them?
Asking seriously here, I have always understood the situation to be that were only worried about bugs that are visible to the human eye(i.e. Don’t require a microscope to find them etc). If that’s the case, aren’t an enormous amount of the bug worries unfounded?