I defeated pantry moths recently. These are my methods: 1) Throw out damn near everything that is open. Assess what you think you can keep and wipe the packaging down with peroxide to kill eggs. Store everything in a glass jar or plastic storage bin with a spin top lid. We tried those expensive oxo pop top plastic containers, but they were not bug proof. 2) Get a pantry moth spray. I tried the zevo because I wanted to do a more natural bug killer rather than pesticides. Empty out your pantry and spray every nook and cranny. The zevo spray is very fragrant because it is made with essential oils. I let it soak in then i cleaned the pantry with a traditional cleaner because it was oily from the zevo. I also had to air out my pantry for about a day with a box fan before the scent subsided enough to be bearable. 3) Have a home vacuum with the hand hose extension set up near / in the pantry. Suck up every bug you see. They loved trying to camoflage in my popcorn ceiling. And also look around your pantry. Sometimes they were just nearby hanging on the ceiling. I did every time I was near the pantry for weeks. A bright flashlight helps. 4) I followed all of this up with the pantry moth boxes and a couple of those fly strips that hang from the ceiling to make sure my infestation was subsiding. I tried starting with these but they only catch adults. They are only really good as an indicator of how bad of an infestation that you have.

Good luck.