Inspect all food products stored in your pantry or food storage area. Every single product that contains flour, especially bread flour and whole wheat flour (the worst) should be inspected. Also, cake mixes, corn meal, cereals, spices, dry dog food, bird food and bird seed, ANYTHING that is a dry grain based product must be inspected. Open the container and pour the contents into a large bowl and inspect for beetles. If you find any evidence of beetles, throw that product away immediately, and if recently purchased, take it back to the store and get your money back.
Completely empty the pantry or food storage area, the vacuum and clean like crazy! Make sure that there are no food crumbs anywhere and that the entire area is **** and span.
Replace any old or worn shelf liners with NON-STICK shelf liner. Do not use newspaper or paper period. Always use something you can wipe down with a wet towel and clean. Sticky shelf liners are are perfect food source for many pests including cockroaches.
Spray the cracks and shelf corners with an insecticide such as Demon WP, Demand or Gentrol Aerosol. Products such as Ultracide, while labeled primarily for fleas will do an excellent job of killing flour beetles and also provide the insect growth regulator that keeps the immature beetles from developing.
After the shelves have dried, replace all food items. Make sure that you have thoroughly inspected all foods, bags, boxes, etc. The only thing you don't have to inspect are canned goods.
Use monitors and traps such as the EcoSafe "Sticky" Bug Trap or a trap with a phermone (sex attractant) such as the Pro Pest Moth and Beetle trap. Place these traps on shelves directly next to suspect food and do not hang them or put them in areas where the beetles would have a hard time getting to them. hope this help's!