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  • Black Flag Ant & Roach Killing Chalk
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Black Flag Ant & Roach Killing Chalk


Price: $15.90 + $4.99 shipping
Only 9 left in stock.
Ships from and sold by Product4Less.
  • The easiest way to protect your home and outdoor areas from insect invasions.
  • Simply trace areas that ants &roaches are coming from, wait & watch as your home becomes insect-free
  • Effective for up to 8 weeks after applying

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Frequently Bought Together

Black Flag Ant & Roach Killing Chalk + 6 Pieces Miraculous Cockroach Chalk Insecticide Odorless Kill Ant Roach & Bugs + Miraculous Insecticide Chalk
Price for all three: $37.05

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Product Details

  • Shipping Weight: 0.8 ounces (View shipping rates and policies)
  • ASIN: B002S4NZI0
  • Average Customer Review: 4.6 out of 5 stars  See all reviews (13 customer reviews)
  • Amazon Best Sellers Rank: #3,297 in Patio, Lawn & Garden (See Top 100 in Patio, Lawn & Garden)

Product Description

Also known as "Chinese ant chalk", Black Flag Ant & Roach chalk is the easiest way to protect your home and outdoor areas from insect invasions. Use the chalk to draw lines around common insect entry points (one chalk piece is enough for ~250 feet of protection) and get rid of ants and roaches before they become a bigger problem. Black Flag Ant & Roach chalk is the most effective, affordable, and safe way to take back control from ants and roaches.


Customer Questions & Answers

Customer Reviews

4.6 out of 5 stars
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See all 13 customer reviews
Ten minutes later - NO ANTS.
K. Martell
The packaging for the Black Flag chalk is what makes this same product legal where the cheap Chinese 'Miracle Chalk' is illegal per EPA.
David Martin
What will happen is, the ants and roaches will cross the chalk line you make and eventually kill them.
James McDonald

Most Helpful Customer Reviews

9 of 9 people found the following review helpful By David Martin on June 12, 2013
The packaging for the Black Flag chalk is what makes this same product legal where the cheap Chinese 'Miracle Chalk' is illegal per EPA. Same basic product, though active ingredient may vary in the cheap ones. But the ability of children to get to and handle (and eat) the poisonous bare chalk is why it is banned. By inserting it into a plastic dispenser/holder touching the actual product is eliminated. I have actually used the cheap Chinese product for decades till I discovered today it is not nearly as benign as the packaging and advertising states. BUT it sure works within minutes -- ALL the ants die after touching it. As do all roaches. So, use caution, do keep from children, food areas and pets, wash your hands well after applying, and either be VERY careful with the cheap version and wrap it well both while applying and storing, or just buy the more expensive but better packaged Black Flag version.
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4 of 4 people found the following review helpful By Dr Word on June 6, 2013
I was visiting a friend in Hawaii, and we noticed an infestation of ants behind some books; My friend got out the chalk and drew a line, and within hours the ants were totally gone. I bought a couple chalks,not ants) to bring back to NYC and gave one to a friend who has a roach problem (who doesn't in NYC?). In Hawaii, the roaches can be 2 inches long, and this stuff works!!
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4 of 4 people found the following review helpful By Gordinho on February 11, 2013
Verified Purchase
I found this product at ACER hardware store and since I bought and used ... I keep the roaches out and ants !
Good !
Once you make that mark - ants will disapear ... but you can't wash right away !
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2 of 2 people found the following review helpful By Tom Blees on November 19, 2012
I live in the country outside Sacramento, and have had plagues of ants with thousands overrunning my kitchen. Terro and other ant baits were only partially helpful at best, even after waiting for days for them to take effect. Then just as I was so desperate as to call Terminix and have them spray poison around my landlord told me about ant chalk. I found some Black Flag Ant & Roach Killing Chalk at a local hardware store (though most don't carry it). It's a pyrethrin-based stick of chalk, and all you do is locate where the ants are coming in (usually a tiny crack or hole) and draw a circle around that place with the chalk stick. That's all! Within a day all the ants in the kitchen (or wherever) are dead, and they don't come back. I couldn't believe it! I didn't have a reinfestation for about 3 months, and as soon as I saw some coming back I did the chalk thing again. Done!

Those two episodes were it for about a year. Recently I noticed some ants coming in from under the carpeting in the living room. Took the chalk stick and just drew a line where the carpeting joins the baseboard. That took care of it, but just a couple weeks later we woke one day to find an ant highway from the corner of our sliding door to the garbage can. (It's the beginning of winter, so they're scouting to come inside.) Circled the entry point with chalk, and within the day they were all dead and haven't come back.

This sounds unbelievable, but I can assure you it works like a miracle. I've fought with ants for years with all sorts of poisons and bait and traps. Nothing even comes close to this chalk. It's sometimes called Chinese Ant Chalk, which I suppose is the same stuff, but I know from experience that the Black Flag stuff works like a dream. And it's cheap!
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2 of 2 people found the following review helpful By Elana Nadel on May 8, 2013
Verified Purchase
It works really quickly - is all I can say. No need to say more except that it is easy to apply and it is transparent so nobody sees you applied it.
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1 of 1 people found the following review helpful By K. Martell on October 2, 2012
The chalk may be a little tricky to get out, but if you read the directions it's a no-brainer. And completely worth it - this stuff works like a charm on ants! I've had a major ant infestation in my house. Draw chalk lines around the point of entrance, along the line of ants, around the dog's food dish, etc. Ten minutes later - NO ANTS. And they stay away for weeks. My house was full of ants and now they are gone. Good stuff.
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8 of 12 people found the following review helpful By James McDonald on August 12, 2010
Verified Purchase
Upon sitting on the toilet and saw a small roach in the bathroom, not being able to do anything about it at the time, followed by big Poppa cockroach crawling on my foot the next day, I decided it was time to do something now about these ugly things that make me scream and cringe.
I got up in the middle of the night to search Amazon.com and bought Black Flag Ant & Roach Killing Chalk, Dial Corp. 51913 Combat Quick Kill Roach Traps and Pic 16Oz Boric Acid Roach Killer BA-16.
I used my Amazon.com Gift card balance and received the product in 3 days from date of order.
Please do not allow children or pets to play with this Chalk. It contains Tralomethrin and other ingredients.
The backing of the cardboard container includes a pamphlet to show where to use and how to use the dispenser that holds the chalk. Precautionary statements and first aid instructions are also inside the pamphlet.
The chalk comes in its own 4" dispenser that will hold the chalk in place.
What will happen is, the ants and roaches will cross the chalk line you make and eventually kill them.
Please to not use where children and pets will be in contact with the chalk. Do not get chalk in contact with your clothes.
I used the chalk to draw around the stove, the baseing under the cabinets on the floor. I made a line around the refrigerator.
I discovered that the roaches can come in from outside under the doorway and through the door hinge sides of the front door.
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