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Boric Acid Roach Control

Summary: Borice acid roach control works. It's the all-purpose insecticide that does it all. Boric acid is used to kill ants, spiders, cockroaches, wood boring beetles, and fleas. Boric acid can stop and repair wood rot, too.

Boric acid is a colorless, odorless powder derived from borates that occurs naturally in soil, rocks, and seawater.

Besides pest control, boric acid has many uses that are very beneficial to mankind. It can be used as an antiseptic to sterilize wounds and as eye drops in a diluted form. It does everything from curing athlete's foot to treating vaginal yeast infections. It soaks up moisture and kills fungus which makes it good for treating wood rot. Boric acid can be used to prevent wood boring beetles, too. It is used as a flame retardant and even used in nuclear power plants to regulate the fission of uranium. It is practically non-toxic to humans,


mammals, birds, fish, and many beneficial insects such as bees.

And, if all those Boric acid uses are not enough, it can be used to kill fire ants, spiders, cockroaches, fleas, termites, beetles, and silverfish in widely available pesticides. The boric acid sticks to the legs of the insect when coming in contact with it, then the insect ingests it when grooming. It also acts as an abrasive on their exoskeleton.

Boric acid works slowly, it takes three to ten days to kill an insect using boric acid. This can be a good thing because boric acid is often combined with a food attractant in baits. The insect will eat a little of the bait, the boric acid sticks to them, and they carry it back to their nest where it spreads to the other insects living there.

Boric acid is effective in killing termites, ants, and cockroach colonies. too. It is available as aerosols, liquids, granules, wettable powders, dusts, pellets, and in combination with other ingredients as in baits.

To use boric acid as a roach control the boric acid should be applied into cracks and crevices in the kitchen, bathroom, and basement. Sprinkle some under the fridge, oven, dishwasher, microwave, and washer and dryer. It can also be applied above cabinets or between cracks in shelves. Basically, dust the boric acid powder into the small places where the roaches might like to hide. Under the kitchen sink between the water pipes is another great place to put it to


prevent roaches. Do not create piles of boric acid. It should only be applied as a thin film on the surface of the floor.

Boric acid can be used to get rid of fleas by putting it into carpets and dog beds. By working the powder down into the carpet you can kill fleas and the flea eggs. Vacuum the carpets thoroughly before you apply it and leave it in for a couple of weeks. It won't leave any stains.

One word of caution: Pregnant women should not use boric acid because of possible pregnancy complications. So, that means "heads up" on the following products: Flea Stoppers, Mop Up, Bora-Care, Jecta, Niban, and Timbor, plus others that contain boric acid. 

One more cool use of boric acid is utilized by jugglers and performing artists. When boric acid is combined with methanol it produces a bright green flame when it is burned. Just thought you would want to know this in case you were thinking about starting a flea circus and were looking for some great effects.

Ok, so that is Boric Acid. It's an all-around tool. Granted, it is not the fastest acting pesticide, but it is fairly safe for use around the house. As always, we urge you to carefully read the label of an insecticide and follow the directions.

Ask Rick A Question


29 Jul 2014, 03:40
I know it says not for pregnant women, but I have used it while pregnant & would again if I needed to. There is NO product to kill fleas that is okay'd for use by pregnant women, period. My husband was out of state on work, I was alone with a 2 year & did not have the money anyway to hire an we used Boric acid & it worked well. Even if I hired an exterminator, they aren't going to come back through & wash my clothing, wash my floors, wash my child's toys,etc...I'd have to do that & thus come into contact with a lot of chemicals anyway. I do understand that in lab rats, female lab rats showed some birth defects when exposed to super high doses of boric acid, but I can't imagine dusting your carpets would come anywhere close to that, especially if you are very very careful & use a help filter vacuum.

Just my 2 cents for what it is worth.
04 Mar 2015, 20:34
How will it kill spider's if they under table I moved in with a friend an I have 2small children theirs spider's an little roaches I downt want them on us they get in. An destroy everything an I cant sleep to protect kids the thought of one on me when I.sleep I boomed house didnt kill them
Ask the Exterminator
05 Mar 2015, 08:58
Boric acid won't kill any insect if the insect does not come in contact with it. Vacuum the spiders and knock down spider webs. Eliminate clutter. That is, by far, the easiest method of control.
18 Mar 2015, 11:11
I wonder what is the danger of poisoning myself ? In my car I'm afraid I've put piles of this stuff around the seats, top of front seats because nasty buggers seem to have infested them. I hadn't read this blog but even if I had it would be hard to believe a thin layer would do the trick. I nap in the car ... could I be getting close to the dangerous level of 4 mg/m^3 for inhalation ? I don't notice dust in the air. Apparently skin exposure isn't very dangerous. I've probably contaminated many surfaces although I can't see it.
Ask the Exterminator
19 Mar 2015, 11:43
Exposure to a pesticide is not healthy at any level. You need to vacuum thoroughly and wipe down all surfaces where human contact is possible. Rather than using a pesticide to control the bugs, I suggest putting out strips of double sided carpet tape to trap insects.
Mary K Johnson
25 Apr 2015, 11:15
I would like to thank you for your quick response if resolving the infestation of Carabid Beetles in my home.Your information has provided the best resolution for us. Thank you again !
E Green
20 May 2015, 20:46
Will a dusting of boric acid cause me any issues in the house while pregnant? I'm nervous the fine dusting could've been picked up by the ventilation system and is now in my air ducts.
E Green
20 May 2015, 20:49
Sorry I meant to specify a dusting in the attic.
Ask the Exterminator
20 May 2015, 21:09
I don't recommend using dust in an attic if you are uncertain about ventilation. The dust can seep into living spaces.
06 Jun 2015, 00:29
ill tell you the truth about boric acid! IT DOES NOT WORK!!!
it even worst because it will increase the amount of roaches in your house a twice what you have!!!

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