Once weevils invade a kitchen, they can be nearly impossible to exterminate. These little critters get into everything, and are often impossible to spot until it's too late. Getting rid of weevils and keeping them from returning, is an arduous task. This method takes some time and elbow grease, but is guaranteed to pay off in the end.
Inspect all dry goods in the cupboards. Throw away any food item that is infested with weevils. Take the infested food outside immediately.
Put all remaining dry goods in the freezer for 5 days. The cold will kill any weevils that sneak in under the radar and all their eggs.
Remove everything from all of the cabinets, pantries and other shelves in the kitchen. Wash all the dishes and cooking utensils in hot water. Peel up all the shelf paper and throw it in an outside garbage can.
Mix 2 teaspoons of borax and 1/4 cup vinegar together in the bucket. Fill the bucket with hot water. Dip the brush into the cleaning solution and scrub all of the shelves in the kitchen. Make sure to clean under the shelves and in the corners. Dry the surfaces with an old towel.
Spray all of the cupboards with nontoxic insect spray. Close the cupboard doors for about 4 hours.
Sprinkle black pepper on all the cleaned surfaces. The pepper will repel weevils, roaches and other unwelcome visitors.
Put all of the dishes and other cooking utensils back on the shelves. After the dry goods have been in the freezer for 5 days, pour them into separate, rubber-sealed glass jars. Put a dried bay leaf into each jar as bay leaves repel weevils.