On topic, Ant I feel your pain. I have found the same thing after eating a few cookies my mother made when I was young
It made me look at ingredients closely to this day.
I think those bugs will show up in flour, oatmeal, many other grains even if put in a sealed jar. I may be wrong, but I think the eggs are already in grains when you buy them
I think people, especially kids and teens have lost touch with where food comes from and what is involved in producing it. I'm 30 and remember a girl in my class in high school asking my science teacher what the red stuff that comes out of meat is!
I don't like eating bugs if I don't have too.
I check any grain, flour, cake mix, cornbread mix, etc for insect larva before mixing and cooking. I have found insect larva or worms many times, kinda nasty!!!
Copied from
http://ohioline.osu.edu/hyg-fact/2000/2160.html
If Americans could tolerate more insects (bugs) in what they eat, farmers could significantly reduce the amount of pesticides applied each year. It is better to eat more insects and less pesticide residue. If the U.S. Food and Drug Administration would relax the limit for insects and their parts (double the allowance) in food crops, U.S. farmers could significantly apply less pesticide each year. Fifty years ago, it was common for an apple to have worms inside, bean pods with beetle bites and cabbage with worm eaten leaves. Most Americans don't realize that they are probably already eating a pound or two of insects each year. One cannot see them, since they have been ground up into tiny pieces in such items as strawberry jams, peanut butter, spaghetti sauce, applesauce, frozen chopped broccoli, etc. Actually, these insect parts make some food products more nutritious. An issue of the Food Insects Newsletter reports that 80 percent of the world's population eats insects intentionally and 100 percent eat them unintentionally.
peace,
Zero