Silly question about food storage

[Guest guest]

As I was going through my cupboards looking for all of my baking staples, I came

across a bag of dill weed that had found it's way buried under things and in the

back. There were holes in it and at closer inspection, I saw that bugs had

gotten into it. Ugh. Well, they also got into an UNOPENED huge box of cornmeal.

Other than putting the spices into spice jars, how do I keep the bugs out of

these things? They apparently eat through plastic bags and find cracks in boxes.

Do I have to put them into plastic or glass containers? Would paper bags work

(because my flour still seems fine)? I'm just glad they didn't get into my other

baking supplies beacuse almost everything comes in plastic these days!

Thanks in advance!