R.G.
I helped my dad clean out his pantry at his house. The moths even invaded unopened boxes and bags. We tossed everything out. Washed all of the shelves. Knocked down the cocoons that were on the popcorn ceiling. Then put out the sticky moth traps. He had to replace many of these traps. He bought the traps at Orchard Supply Hardware. I found the information to get rid of them by googling pantry moths. We even wiped down the liquor bottles because some were in that cupboard too.
Good luck! Be diligent and patient, it take awhile!