Symptoms
- Small moths fluttering near pantry shelves or flying at night
- Webbing or clumping inside flour, cereal, rice, or pet food
- Tiny beetles or larvae visible in grain products when poured out
Likely causes
- CommonInfested package brought in from the storePantry moths and weevils are commonly already present as eggs or larvae in bulk grains, flour, or pet food when purchased.
- CommonSpread from one infested item to nearby stored foodOnce established, larvae and adults can move to and infest other nearby dry goods.
- PossibleLong-stored or older dry goods providing time for a small infestation to growProducts stored for many months give a small initial population time to expand.
What to do
- Remove all dry goods from the pantry and inspect each package closely for webbing, clumping, or visible insects.
- Discard any infested items, sealing them in a bag before throwing them out to avoid spreading moths further.
- Vacuum all shelves, corners, and cracks in the pantry thoroughly, then wipe down with soapy water or a vinegar solution.
- Check even unopened boxes and bags, since some pests can chew through cardboard or thin plastic packaging.
- Transfer remaining dry goods into sealed glass or hard plastic containers going forward to prevent reinfestation.
- Set out pantry moth pheromone traps to catch adult moths and monitor whether the problem is resolving.
- Recheck the pantry every couple of weeks for a month or so, since eggs already present can continue to hatch for a while.
Tools and parts
- Vacuum
- Cleaning supplies
Pantry moth trapsSearch: “pantry moth pheromone traps”
Airtight food containersSearch: “airtight pantry storage containers”
When to call a pro
Call a pest control professional if moths or weevils keep appearing despite discarding infested food and sealing the pantry.
Safety
Generally low risk
Generally low risk for a careful person. Stop if anything looks different from what this guide describes.