Get some pantry moth traps. I know I had an issue with them once because some eggs were in my seeds I had purchased at a grocery store. Unfortunately, you will have to throw things away if you want to completely rid yourself of them. The traps use pheromones, and I am not sure of the source. Do we have a vegan bug expert in the PPK?
Here's a link to a how to select a PMT:http://www.pantrymothtrap.com/MothTrapsPick.html