Summary:
Have you ever found insects crawling around in your box of Lucky Charms? Could be a flour beetle. The flour beetle will not bite or sting people, but it does millions of dollars in damages to our food supplies every year. You can learn more about flour beetle control products and/or purchase them here.
Many insecticides will not work on flour beetles. The only type you can efficiently use is a residual insecticide such as
Talstar Pro or
Suspend SC. If you do not have experience with this type of chemical, your local exterminator is the professional you should call to rid you of your flour bug problems.
The flour beetle is a species of beetle that feeds on products containing flour. This insect eats any type of flour from products being processed in mills to grains stored in pantries. Because of the beetle's small size, though, it will not eat undamaged grains. Instead, it eats foods like cereal that are broken up and easier to eat. The flour beetle will eat small pieces, as well as grain dust that may accumulate in food containers or in cupboards.
It is very important to get rid of flour beetle infestations before their populations start growing. Female flour beetles can lay a few hundred
eggs at a time. The eggs of flour beetles are extremely small. They are usually white and sticky. The eggs grow into larvae and the larvae feed on grains to help them grow into pupae. After about eight days, the pupae become adult flour beetles.
Adult flour beetles are usually no more than 1/8 of an inch in length. They have six legs and two clubbed antennae. They are usually shiny and flat. Though you'd think that these bugs would not have a long lifespan because of their tiny size, they can actually live up to three years if they find a good source of food, and if you don't accidentally cook them in your pasta.
There are two main types of flour beetles: the red flour beetle and the confused flour beetle. Sound confusing? They're not. Actually, the red flour beetle is most prevalent in southern states, while the confused flour beetle is mainly found in northern states.
There are two main differences between the red flour beetle and the confused flour beetle. The red flour beetle flies easily, but the confused flour beetle cannot fly at all. The red flour beetle's antennae are enlarged in distinct segments, while the antennae of the confused flour beetle smoothly enlarge towards the tips.
Flour beetles will not sting or bite humans. Allergies are the worst reaction people can experience from flour beetles. Also, flour beetles do not cause any structural damage to homes or eat up any furniture. While your groceries may not be safe, at least your living space is.
Flour beetles can become pests not only in homes, but also in flour mills, grocery stores, and warehouses. Their main foods of choice include beans, nuts, dried fruits, chocolate, and any type of grain. Don't forget to check the dog food.

larvae
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If you discover these pests crawling around your favorite foods you need to examine all the food in your cupboards or pantry to ensure that there are no flour beetles hiding out. They can infest unopened boxes of food, as easily as those foods that have been opened. Pay attention to foods that have been long forgotten in the back of your pantry shelves. Your oldest stored foods are most susceptible. Unfortunately, the most effective thing to do to is to throw out the contaminated food. Don't forget to take out the garbage immediately, too. If you really don't want to give up your infested bowtie pasta, you can go one of two routes. You can heat the grains for at least 45 minutes or you can store them in the freezer for at least three days.
Flour beetles crawl into grains in flour mills, travel to the grocery store and wind up in your home. If you recently purchased the contaminated food items you may be able to receive a refund from the store where you made the purchase. And, I'm sure you're kicking yourself right now if you didn't save your receipt.
The most important treatment plan is to fully eliminate all of the flour beetles from your cabinets. Once you've thrown out the contaminated foods, take all of the uncontaminated foods and set them on a counter or table. You'll need to vacuum out your cabinets from top to bottom. This is done most easily with a Dust Buster or a crevice hose attachment. When you are vacuuming make sure to go through every crack and crevice, as flour beetles and their larvae can easily hide out in these areas. Also, be sure to vacuum underneath the shelves in your cabinets. This treatment should eradicate most of the flour beetles that are camping out.
Comments
bug hater
09 Apr 2010, 13:27
My sister who was living with us for a few months loved to cook. So I
didn't complain when she took over in the pantry.. that is until I realized
there were bugs on the couch.. and in the flour! I got rid of them and
cleaned out the shelf.. but I saw a larva today and I'm just so grossed
out. I even found one in the bathroom. What more can I do? I'm so grossed
out I want to move!
Marion Langham
11 Sep 2010, 13:59
I am breeding mealworms and found amongst the small worms other worms that
I can't identify. One looks much like the mealworm but has black stripes
on its body, a much softer under body and moves three times as fast as the
mealworm, and you help from this description.
Kind regards
Marion
Lori
11 Oct 2010, 12:05
I found flour bugs in the bottom of my bread machine. I store it in my
spare room. I didn't realize it until I noticed some little bugs crawling
around that area and then saw more feeding on the flour residue in the
machine. Can they get all over a person's house or will they just stay in
the area where they are feeding? Thank you for your help.
Ask the Exterminator
11 Oct 2010, 12:12
They will stay near a food source. That is mainly your kitchen and pantry.
sidbaad
13 Oct 2010, 21:48
I am a Sea salt. I live and sail on-board my boat sometimes for months. I
have got used to ignore mold and I get along well eating the food that is
contaminated with mold. Lately I have found Confused Beetles in my limited
supply of flour. So far I have IGNORED! them. are they dangerous to eat
them well baked in the bread or should I be concerned?
Ask the Exterminator
15 Oct 2010, 10:44
They are no dangerous to your health, but lots of people don't enjoy eating
insect infested foods.
Raquel Sarabia
21 Oct 2010, 03:21
ahh I'm grossed out I see this beetles everywhere around the house...in my
bed..are this in any way dangerous..I clean the pantry got rid off
everythig but no solution to the problem..please help
Ask the Exterminator
21 Oct 2010, 09:55
Treat infested areas with the products recommended in the article. Follow
label instructions carefully.
cherie tzogas
31 Jan 2011, 23:37
Will an exterminator be able to get rid of them completly..with one visit
or multiple...i've thrown everything out and vacuumed and am still finding
them...help please
Ask the Exterminator
01 Feb 2011, 10:05
If you are still finding them you have yet to find all the infested boxes.
Remember, they can infest products that have never been opened. Look for
boxes that are past their expiration dates. Open those packages and look
for insects.
Amy
13 Mar 2011, 18:24
My daughter just ate some raisins that had what I think were flour beetles
in them. I read in the internet that they can cause tapeworms. What
should I do?
Ask the Exterminator
14 Mar 2011, 12:11
A tapeworm called Hymenolepis diminuta can infect humans after infected
mice and rats contaminate grains, flour products and baked goods with their
feces, leaving meal worms and flour beetles. But, unless you have rodent
activty, it is doubtful your flour beetles are infected.
Sara
01 Aug 2011, 21:32
I have flour beetles and I thought I got all of them, but I open the
cabinet and there dead, and I seen a small baby roach alive(Dark black or
brown,with a white dot on the back). Should I be glad that their dead and
worried about a roach infestation? I know i had my leasing office to spray
my apartment, but now I found a roach. Then I found another type of
roach(light brown) dead in my medicine cabinet. And what can I do, I
purchased Raid max, but i don't know if that is strong enough. Is it true
that if my neighbors have roaches I will eventually have them. Basically I
need to move? If i do have to move could i bomb my apartment so i want take
them to my new place?
Ask the Exterminator
02 Aug 2011, 11:49
Insecticide bombs are meant mainly for flying insects. They don't do much
of a job on roaches. I prefer a product like Maxforce FC Roach Bait
stations, which you can buy on this website.
The flour beetles can infest never-opened packages of food. If the
expiration date has passed, you need to open the boxes and check for
infestations.
Savanna
16 Aug 2011, 16:55
I live in a two story house and I keep finding what i think are red flour
beetles in only my room. My room is carpeted, but my bathroom is tile. I
eat in my room often. Could the left over crumbs hidding in my room be the
problem? I already washed the carpet several times and it made no
difference. I find about one or two flour beetles per week flying around my
room. I dont want it to turn into a major problem but I have no idea where
the beetles' main source of food is. I also found several dead flour
beetles lying around in my bathroom. Other than that no where else in the
house has any trace of them, not even our pantry. How do i handle this
situation?
Ask the Exterminator
17 Aug 2011, 15:58
Red flour beetles attack stored grain products such as flour, cereals,
meal, crackers, beans, spices, pasta, cake mix, dried pet food, dried
flowers, chocolate, nuts, seeds. If the "use by" date is expired on any
food package, open the package and examine it for insect activity. Discard
contaminated food. Of course, before starting any treatment you should get
the insect positively identified so you know, for sure, you are treating
for the correct insect.
Marissa Landrigan
23 Sep 2011, 00:06
I've found one or two bugs over the last six weeks or so that I'm 90% sure
were flour beetles of some kind. What's strange is, I've only found one in
the bathroom tub, one on the bathroom sink, and just tonight, found a third
on my bed. I've checked all my bathroom products and all over the kitchen
-- why would they be elsewhere? I also just woke up yesterday with a few
bites on my arm, and I didn't think beetles bit, but these really look like
beetles. Could they be something else? Is there some kind of flour beetle
that would be so far from the kitchen?
Here are some photos (it had a smaller head, too, but that got smashed off
when I lifted it with tweezers).
http://www.flickr.com/photos/mklfieldwork/
Ask the Exterminator
25 Sep 2011, 11:29
The photos were not clear enough, but your insect may be saw toothed grain
beetles. These insects do not bite humans. Read the post before yours about
checking foods with past due expiration dates.