How do weevils get into sealed packages?

Pantry pests are most likely to infest products that have been opened but they also can get into unopened paper, thin cardboard, and plastic, foil or cellophane-wrapped packages. They may chew their way into packages or crawl in through folds and seams.


How do weevils get in unopened packages?

Weevils can chew through cardboard and plastic, which means they can also get into unopened packages of food. Get rid of excess food packaging such as cardboard boxes if the food is in an airtight bag that hasn't been contaminated. Weevils can hide in packaging and re-emerge later.

Can weevils get in sealed bags?

Due to past insect problems, we're diligent about storing all foods in glass jars or plastic zip-top bags. Unfortunately, grain weevils (Sitophilus granarius, also called granary weevils or wheat weevils) can chew through paper and plastic packaging.


Can weevils live in airtight containers?

Embrace Airtight Everything

If you've been looking for a reason to invest in new containers for your pantry, this is a good one. The best way to keep pests like flour mites, grain weevils, and pantry moths out of your essentials is to store the ingredients in airtight containers.

How do weevils get into sealed flour?

There are a couple ways these guys infiltrate your home. Female weevils lay eggs in the wheat kernel in the field, and occasionally those eggs survive the milling process and end up in the bag of flour you bought from the store. The eggs hatch, and the larvae begin their pre-coital feast.


How do maggots get into sealed food?



Should you throw away flour with weevils?

If you're using products in baking, the high temperatures would help to have made the flour safe to eat. That said, it's not recommended to make a habit of this – if you find any products with mites or weevils, it's best to dispose of them immediately and take steps to ensure the infestation is dealt with.

What to put in pantry to stop weevils?

Dried bay leaves discourage grain and rice weevil infestation, so place one in each airtight container. Purchase non-toxic, pesticide-free pantry moth traps if you continue to have pantry moth infestations.

How do I permanently get rid of weevils?

Steps for Getting Rid of Weevils in Your Pantry
  1. Step 1: Clean Out Your Pantry. To fully remove the pantry weevils and prevent a future infestation, remove all unsealed dry foods from your pantry shelves. ...
  2. Step 2: Freeze Salvageable Items. ...
  3. Step 3: Deep Clean the Pantry. ...
  4. Step 4: Use an Insecticide.


Does vacuum sealing prevent weevils?

But if you vacuum seal it properly, it will extend that shelf life to 1-2 years. Vacuum sealing keep new bugs (weevils) from getting into your flour, but there could be the chance that your flour has existing insect eggs already in it.

What keeps weevils away?

Use herbs to help deter weevils.

Herbs that may work as weevil deterrents include bay leaf, clove, rosemary, black pepper corns, and garlic cloves. A few bay leaves can be placed inside each grain, flour, and cereal container. Use the other herbs on the pantry shelves, otherwise they may flavor your grains.

How long can bugs live in a sealed plastic bag?

No other method produces the kind of results that professional pest control can. Bug bugs live in plastic, and considering adults can survive approximately five months without feeding, this removal method is not effective.


What containers keep weevils out?

Store Foods In Airtight Containers

Pantry pests are capable of squeezing through tiny spaces so if you want to keep them away from your food, better invest in a good airtight plastic, metal, or glass storage containers. You can buy and use mason jars for storing foods like grains.

How do weevils get into packaged food?

They get into food anywhere along the food chain – during growth, harvest, or storage in the warehouse, store or your home. Many hide in packaging, chew through plastic bags and wrapping, and seek cover in the crevasses of shelves and walls. Start with a few and soon everything is infested.

What are 3 potential options to get rid of the weevils?

How to Get Rid of Weevils
  • Dispose of compromised foods. Discard any infested food items—like flour, rice, or pasta—where you've found weevils. ...
  • Vacuum the area. Clear out the kitchen cabinets or pantry shelves where you found the weevils, and vacuum the area. ...
  • Wipe down surfaces.


Does refrigeration prevent weevils?

Duvel (2)a found that refrigeration at 32 o to 34o F. was a perfect protection. Krall (4) concluded that eggs as well as all stages of the cowpea weevil, Bruchus chinensis L., can be killed by storage at 32o F. or colder (duration of exposure not given).

Can you wash off weevils?

What should we do if we find weevils in rice? Consumers can remove rice weevils by washing the rice. They can continue to consume the rice thereafter.

Can weevils get into Ziploc bags?

According to thekitchn.com, the author states, Due to past insect problems, we're diligent about storing all foods in glass jars or plastic zip-top bags. Unfortunately, grain weevils (Sitophilus granarius, also called granary weevils or wheat weevils) can chew through paper and plastic packaging.


What does vinegar do to weevils?

Use White Vinegar

Yes! Vinegar can help in getting rid of weevils and other pests that's why you can use it for your problem. Use it in cleaning pantry areas as it will drive away weevils and will stop them from coming back for future damages.

Can pantry bugs get into sealed packages?

Pantry pests are most likely to infest products that have been opened but they also can get into unopened paper, thin cardboard, and plastic, foil or cellophane-wrapped packages. They may chew their way into packages or crawl in through folds and seams.

Will weevils go away on their own?

Weevils inside homes

When weevils are found indoors, physically remove them with a vacuum or broom and dust pan. Pesticides are not effective or necessary. These weevils are harmless and temporary and will go away on their own.


Where do weevils nest?

The attic, the garage and the crawl space are also common winter hiding places for weevils. These weevils might spend the winter without being seen by the homeowner. However, some weevils find their way into the living space of the home. They might come through a crack in a wall or a space next to a pipe.

Why do weevils keep coming back?

What Causes Weevils in Food Storage Areas? Weevils generally gain entry into your home through purchased containers of whole-grain cereal products that have been infested at food processing and packaging centers. Once in your home, weevils can spread to whatever cereal grains are available to them.

Should I throw away rice with weevils?

If you have found a rice weevil infestation in your pantry, we recommend throwing out every dried food item that isn't in a tightly sealed glass or plastic container, old or new. It may be costly to lose all that stored food, but it's the best way to get rid of a weevil infestation.


Does cinnamon deter weevils?

Therefore, cinnamon oil and clove oil were more effective against maize weevil than other EOs tested in this study.

Are there traps for weevils?

Adult weevils can also be captured using a pitfall trap constructed from a several-inches-deep, wide-mouthed plastic cup or dish and a funnel or smaller tapered cup.