Remove all infested food and throw away. (You can kill the weevil in the food by freezing the flour, crackers, cereal, etc., but you will then have to pick the weevil out.) Clean the pantry or other storage area thoroughly with an all purpose cleaner. Pay special attention to corners and crevices. Put any exposed food into plastic containers with lids. Remember to put away fruit or any other food that is on the counter. Cleaning and removing the food source will get rid of most pests; if pests persist you may need to call a professional.