Call Now and Ask About the Winter Deal While it Lasts →

Sign-in to Account
Call Us

(855) 948-5816

aptive_pest_control_lockup-white

Find Service Area

Does Boric Acid Kill Roaches?

Written by Aptive Pest Control September 2, 2019

It’s not hard to find, but does boric acid kill roaches and prevent them from returning? Yes! Using boric acid to kill roaches can be an effective method when applied correctly. However, excessive or improper application of boric acid may diminish its effectiveness. Additionally, since boric acid is in powder form, it can create a messy situation. If you are unsure about applying boric acid or concerned about doing it wrong, it is recommended to seek assistance from a professional to address the roach problem.

What is Boric Acid?

Despite the name, boric acid isn’t actually an acid. Instead, it’s a powder made from a combination of boron and water. Boron is a compound found naturally in food and the environment. If you’ve ever eaten almonds or raisins, then you have consumed boron. The compound found in boric acid is produced from borax, which is collected from mineral deposits. Boric acid is readily available for purchase and can be bought at your local hardware store or grocery store. The mixture comes in a bottle and is ready to use straight out of the packaging. It doesn’t contain an odor or any harsh chemicals.

How does Boric Acid Kill Roaches?

In order for boric acid to work, a cockroach must crawl through the substance. As it walks through the boric acid, the cockroach will get the powder on its legs and body. Then, when a cockroach cleans itself, it will ingest the boric acid. The boric acid will absorb into the cockroach’s body as well. Once inside the body, boric acid will start to affect the roach’s nervous and digestive systems, eventually causing the cockroach to die. Additionally, boric acid can be applied to bait and traps. In this case, the cockroach will take the bait and introduce the food to its nest. Multiple cockroaches will eat the coated bait and will eventually die.

When used properly, boric acid can take out a lot of cockroaches. Because cockroaches aren’t picky when it comes to food, they will often eat dead roaches. If a roach died due to boric acid ingestion, and another cockroach eats it, the boric acid will get into the living roach’s body. This creates a domino effect and is another explanation for why boric acid is so effective when it comes to roach control.

Is Boric Acid Safe?

If used as directed, boric acid is ok to use. However, it is considered a poison, which means there are risks if you or your pet ingest, touch, or inhale it. First and foremost, it is important to apply boric acid sparingly. If you apply too much it, the roach will see it and avoid it. Furthermore, you want to limit your exposure to it.

In terms of toxicity, boric acid ranges from minor symptoms to serious symptoms. Minor symptoms typically include skin irritation, while serious symptoms include nausea and respiratory distress. Additionally, boric acid can be toxic to your pet if they are exposed to large amounts of it. Because pets are much smaller than humans, boric acid can affect them in more serious ways. You should call your doctor if you believe you’ve been exposed to a dangerous amount of boric acid. If you believe your pet has been exposed, call your veterinarian.

To maximize the efficacy of boric acid in your battle against roaches, it’s essential to understand the best practices for its application. To begin, boric acid must be spread thinly across areas where roaches are likely to traverse. If the layer is too thick, roaches might avoid it, diminishing its effectiveness. Additionally, mixing boric acid with attractants such as sugar can increase the likelihood of roaches ingesting the poison. This combination makes an effective cockroach bait, creating a deadly snack for these pests. Remember, while boric acid is a potent roach killer, patience is key—the results aren’t instant but are impactful over time. Safety should always be a priority; ensure that boric acid is kept away from areas accessible to children and pets to avoid accidental ingestion.

Compared to many cockroach-killing products on the market, boric acid is a relatively safe option. As noted, you need to make sure you apply it correctly. When you take pest control into your own hands, there’s always a certain level of risk involved. Rather than taking on a roach infestation yourself, you can avoid risks altogether by hiring a pest control company. A pest control company, like Aptive, knows the ins and outs of roach control. In addition to eliminating roaches swiftly and effectively, Aptive prioritizes the safety of each and every one of your family members.

Cockroaches can wreak havoc on your peace of mind and can be difficult to eliminate completely. Because roach control typically requires additional treatment methods, successful roach control requires a thorough plan. Before deciding to kill roaches yourself, call your local Aptive Pest Control service center today.

Learn more about cockroaches

American vs. Oriental Cockroaches - Guide to Identification and Prevention Can Cockroaches Make You Sick?: What You Should Know Can Cockroaches Survive Without Food or Water? Can Roaches Survive in the Cold? Can Roaches Survive in the Refrigerator? Cockroaches in the Dishwasher: Addressing a Hidden Infestation Cockroaches vs. Silverfish: Which Pest Is Tougher to Eliminate? Do Cockroaches Cause Allergies? Do German Cockroaches Live in Walls? Do Roach Bombs and Foggers Work? German Cockroaches - Identification and Prevention German Cockroaches in Electronics: Safeguarding Your Appliances German Cockroaches in Urban Foundations: What You Need to Know German Cockroaches vs American Cockroaches: What Are the Differences? Getting Rid of Cockroaches and How to Prevent Them  How Do Cockroaches Remember Safe and Unsafe Routes? How Do Cockroaches Survive in Drains After Bleach Cleaning? How Fast a Cockroach Can Run (and Why They Change Direction So Suddenly) How Long Can a Cockroach Live Without Its Head? How to Get Rid of Cockroaches in Your Bathroom How to Prevent Cockroach Infestation After Traveling Keeping a Clean House: Why You Might Still Have Cockroaches Smokybrown vs American Roaches: What Are the Differences? Smokybrown vs. Oriental Cockroaches: Know the Difference The Hidden Places Roaches Hide During the Day The Hidden World of Brown-Banded Cockroaches The Impact of Moisture Leaks on Cockroach Infestations in Kitchens Tiny Brown Cockroaches Behind My Fridge: Are They German Cockroaches? What Are the Evolutionary Advantages of a Cockroach Exoskeleton Design? What Attracts American Cockroaches to Clean Homes? What Do Baby Cockroaches Look Like? What do Cockroach Eggs Look Like? What Does Cockroach Poop Look Like? What Roaches Learn from Their Surroundings (and How Fast) What Type of Cockroaches Are the Most Dangerous? What’s That Musty Smell? It Could Be Cockroaches Why Do American Cockroaches Prefer Sewer Systems and Drains? Why Do I Keep Finding Dead Roaches in My Garage? Why Do Oriental Cockroaches Prefer Damp Surfaces? Why Does Your Clean House Have Roaches? Why Roaches Hide Even When Lights Are Off

Curated articles for you, from our pest experts.

A Detailed Close-Up Image Of A Dark, Segmented Isopod Crawling On A Bed Of Dry Twigs, Leaves, And Soil. A Smaller Isopod Is Visible Nearby, Both Surrounded By Textured Ground Debris.

What Are Isopods in the Garden?

Isopods are beneficial soil-dwelling crustaceans commonly found in gardens where they play important ecological roles breaking down organic matter and contributing to soil health through their decomposition activities. These armor-plated creatures including...

Dec 2, 2025
A Vibrant Blue Wooden Door Framed By A Terracotta Wall And Surrounded By Cascading Green, Yellow, And Purple Vines, With House Number 5 Above The Entrance And A Small Stone Staircase Visible Inside.

The Importance of Sealing Entry Points Before Winter

You recognize that cooling fall temperatures trigger pest movement from outdoor environments into heated structures, with proper timing of exclusion work proving critical for preventing winter infestations.  Sealing entry points before winter proves important...

Dec 2, 2025
Modern Kitchen With White Cabinets, Stainless Steel Appliances, And A Decorative Tile Backsplash, Featuring A Wooden Tray With Decorative Items On The Countertop.

Why You Keep Finding Cobwebs Even After Cleaning

You remove cobwebs from corners, ceilings, and furniture only to discover new webs appearing within days or even hours, suggesting ongoing spider activity rather than residual old webs from previous occupation. Cobwebs keep reappearing after cleaning because active...

Dec 2, 2025
A Close-Up Image Of A Green Lacewing Insect Perched On A Fuzzy Plant Stem, Showing Its Delicate Transparent Wings With Iridescent Purple And Blue Hues And Long Antennae, Set Against A Dark Blurred Background.

Lacewings 101: What Are Lacewings?

Lacewings are among the most valuable beneficial insects in gardens and agricultural systems, with their voracious larvae earning the nickname "aphid lions" for their remarkable predatory capabilities consuming hundreds of pest insects during development. These...

Nov 25, 2025
A White Bookshelf Filled With A Vibrant Assortment Of Hardcover Books Arranged Neatly By Color, With Titles In Various Fonts And Sizes Creating A Visually Striking Rainbow Pattern.

Booklice 101: What Are Booklice?

Booklice are tiny, harmless insects commonly found in homes with moisture problems, feeding on mold, fungi, and microscopic organic matter rather than actually damaging books despite their misleading common name. These minute creatures appear suddenly in humid...

Nov 25, 2025
A Clean, Modern Bathroom Featuring A White Toilet, A Bathtub With A Handheld Showerhead, A Glass-Enclosed Shower Stall, And A Vessel Sink Mounted On A Black Vanity. The Walls Are Tiled, And A Window With Metal Security Bars Allows Natural Light Into The Space.

Why Do Bugs Appear in the Bathroom More Than Anywhere Else

You observe disproportionate pest activity in bathrooms compared to other household rooms, noticing insects including silverfish, cockroaches, and drain flies appearing regularly despite cleaning efforts, suggesting these spaces provide uniquely attractive...

Nov 25, 2025
A Close-Up Image Of A Dead Cockroach Lying On Its Back On A Rough Concrete Surface. Its Legs And Antennae Are Curled Upward, And Its Brown Exoskeleton Is Clearly Visible.

Why Dead Bugs Attract More Bugs

You observe clusters of dead insects in corners or windowsills accompanied by live insects including beetles, flies, or ants, suggesting decomposing insects attract additional pest activity rather than simply accumulating passively.  Dead insects release...

Nov 25, 2025
A Detailed Image Of A Basement Laundry And Utility Room With Exposed Wooden Beams, A Washer And Dryer, A Water Softener, Ductwork, And A Water Heater Unit Against A Brick And Wood-Paneled Wall.

Why Do Basements and Attics Host Different Pest Species

You observe distinct pest types in different vertical zones of your home—moisture-seeking insects in basements while overwintering pests concentrate in attics—suggesting these spaces provide fundamentally different environmental conditions attracting...

Nov 25, 2025
Modern Suburban Home With Beige Siding, Dark Shutters, And A Clean Black Roof, Featuring A Well-Maintained Lawn And A Triple Garage Under A Colorful Evening Sky.

Why Do Pests Return After Moving Out of a Home

You vacate a property expecting pest activity to cease without human occupancy, yet observe infestations reestablishing or intensifying during vacancy periods, suggesting pests exploit conditions created by unoccupied structures rather than requiring active human...

Nov 20, 2025
A Group Of Small Potted Plants, Including A Fuzzy Cactus, A Green Succulent, And A Taller Reddish Succulent, Arranged On A Windowsill With Sheer Lace Curtains Softly Filtering Daylight In The Background.

Why Windowsills Become Hotspots for Insect Activity

You observe disproportionate insect activity concentrated on windowsills compared to other household areas, finding dead and live insects including flies, ladybugs, spiders, and various other species clustered near glass surfaces.  Windowsills attract insects...

Nov 20, 2025

Take back your home with pest control today.