I had a bumper crop of hot peppers last year and in order to keep them I dried and ground them. Been using them sparingly as I had so much and when I went to use more of the jalapeno pepper, there were moths and larvae inside the container. As I checked the other containers, they also had the same bugs. I had them stored in air tight tupperware containers. The only peppers that didn't have the bugs were the habanero, which was actually stored in a plastic sandwich bag. Any idea as to why this happened?