The first step is to find the source of infestation and eliminate all infested food. Any untouched food should be stored in airtight containers. Next, vacuum all cracks and crevices to remove any crumbs and insects they may contain. To avoid reinfestation, it is best to discard the vacuum bag, since the bugs can continue to multiply inside. Last, use a liquid insecticide like Maheu&Maheu Crawling Insect Killer
or a powder product with residual action like Maheu&Maheu Insecticide Dust
. Apply in all cracks and openings in the pantry and adjacent areas. Avoid washing all treated surfaces for about a month. It is strongly suggested you line pantry shelves with paper before putting any food back, so the containers do not come into contact with the insecticide.