How to Prevent Pantry Pests and Protect Dry Goods
Pantry pests often arrive in a package of food. Inspect dry goods when you bring them home, keep opened packages in tightly sealed containers, and clean crumbs and spills promptly. If you find insects, look for the infested food, remove it, and clean the shelves and nearby cracks.
Flour beetles, weevils, and pantry moths can infest flour, cereal, rice, pasta, nuts, dried fruit, spices, and other stored foods. An infestation does not necessarily mean a pantry is dirty; pests may already be inside a package when it is purchased.
Check packages and store food securely
Before putting groceries away, look for holes, torn seams, webbing, clumped food, or insects inside packages. Packaging can be damaged before it reaches the store, and a quick inspection can catch some problems. It cannot guarantee that every package is pest-free.
After opening dry goods, transfer them to clean containers with tight-fitting lids. Glass, metal, or heavy plastic containers are sturdier barriers than thin bags or cardboard boxes. Keep the original package or label nearby when you need its cooking directions or ingredient information.
Buy amounts you expect to use, and rotate older packages to the front. Check pet food, birdseed, dried flowers, and other stored plant materials, too. Pantry pests can develop in these items and spread to food.
Keep shelves clean and inspect them regularly
Wipe up spills as soon as they happen. When restocking, check shelf corners, package seams, and the spaces behind containers for crumbs, webbing, larvae, or small beetles. Pay attention to foods that have been open or stored for a long time.
You do not need to use scented products or special cleaners as repellents. Regularly removing food residue and keeping susceptible foods in sealed containers are more useful steps.
What to do if you find pantry pests
First, find the source. Inspect dry goods throughout the pantry, including unopened packages with damaged seams and foods stored nearby. Look for live insects, larvae, webbing, or clumps that were not present before.
Discard infested food in a sealed bag and take it outside. Then remove everything from the affected shelves. Vacuum corners, cracks, and shelf supports, and empty the vacuum outdoors so captured insects do not remain inside. Wash the shelves with soapy water and let them dry before returning food. University of Minnesota Extension recommends removing infested food and thoroughly vacuuming the storage area; insecticides are not recommended for stored-food insects in cabinets.
Check nearby packages again before putting them back. If you are unsure whether a product is affected, inspect it closely and discard it if you find insects or signs of infestation.
Use traps only to monitor moths
A pheromone trap designed for pantry moths can help show whether adult moths are present. It will not find or remove infested food, so use it as a monitoring aid while you inspect and clean. Traps are specific to certain pests; they are not a general solution for beetles, weevils, or ants.
Bay leaves are sometimes suggested as a pantry remedy, but University of Minnesota Extension reports no evidence that they prevent or eliminate stored-food pests. Removing the food source and cleaning the affected area are more reliable steps.
After cleanup, store susceptible foods in tightly sealed containers and check the pantry during routine restocking. If insects continue to appear, inspect less obvious sources such as pet food or decorative dried plants, or contact a pest professional for help identifying them.
