Tri-Die - 8 oz.

$21.16 - $168.00

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4.5 out of 5 stars Rating: 4.3

24 Reviews | 21 Q&A


{ $21.16 { $18.86 $168.00
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Tri-Die - 8 oz. can (8 oz.)

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Tri-Die - 8 oz.

Whitmire Tri-Die Aerosol combines the repellency of pyrethrin and the long term stability and repellency of silica dust. Tri-Die leaves a dust residual behind after spraying that kills a wide variety of insect pests. Tri-Die is great for wall void applications and crack and crevice treatments.

Prescription Treatment Tri- Die pressurized dust offers a convenient, easy application with no additional equipment necessary. Pressurized, charged particles penetrate deep into cracks, crevices, wall and ceiling voids to provide an ideal uniform dust application, readily adhering to all surfaces. The unique 4-way red application straw can be used for void space application to deliver 360-degree coverage. Tri-Die offers three way insect control - contact, repellency, and residual effect. When an insect crosses through an application area the dust is attracted to the insect's oily or waxy outer cuticle and the insect loses body moisture and dies. The naturally derived active ingredient in Tri-Die creates an unsuitable environment for insect pests. Tri-Die is available in a convenient 8 ounce can making it easier to use in confined spaces and easier to store.

Treatment Recommendations:


Inject dust into wall void areas around windows and door frames, openings around pipes and sinks, behind baseboards and beneath carpet, in cracks and crevices of cabinets and pantries, sewer and floor drains. In food areas: Apply to cracks & crevices and void areas between different elements of construction, between equipment and floors, openings leading to voids and hollow spaces in walls, equipment legs and bases.


Apply dust behind siding, into wall voids, around window and door frames, into cracks of foundations and other places pest may be entering the building. For Carpenter Bees, apply directly into entrance holes.

Rating Snapshot

5 stars   15
4 stars   5
3 stars   1
2 stars   2
1 star   1

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Average Customer Rating
4.5 out of 5 stars (24)

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Most Helpful Customer Reviews
  • 12 of 13 people found this review helpful:

    5 of 5 stars  Long lasting residual
    By Jenny on 07/19/2008

    I worked with a reputable pest control company for 8 years and I have found Tri-Die to be a great repellent. I used this product for many insects. The beauty of this product is it is a long lasting residual and will keep most pests that come in from outside through cracks and crevices out of your home. It does leave a powder film where it is applied, so make sure you use only in wall voids and cracks as the label states. My target pest presently is ants.

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  • 8 of 8 people found this review helpful:

    5 of 5 stars  Tri-Die Kills
    By Ron in Frederick MD on 05/01/2010

    If you have carpenter bees, this stuff will take them out. Using the included tube, I sprayed this stuff in the hole and moved to the next hole. By the time I got to the third hole bees were falling out the previous two and dying. Wait a few days, then plug the hole with wood putty or cork. Done. The can says it works on other pests, too. I have to believe them, given it's effectiveness. I ALWAYS wear protective gear -- gloves, safety glasses and some kind of mask.

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  • 6 of 6 people found this review helpful:

    5 of 5 stars  Kills carpenter bees!!!
    By Ben in brielle, nj on 05/26/2010

    In all the holes I could get to this seemed to work great to get rid of my carpenter bees. It leaves a white residue so be careful on trying to just spray where you need it to unless you want to have a big clean up issue afterwards.

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  • 3 of 4 people found this review helpful:

    1 of 5 stars  Not Sure It Works For Carpenter Bees
    By Stephen in Columbia, MD on 05/26/2012
    Verified Purchase

    Although Tri-Die was offered as a solution for carpenter bees, there was nothing about them on the container itself. I tried it anyway. Injected a one second or so shot into the hole and cleared away the collected sawdust. More appeared the next day indicating that the bee(s) were still alive and kicking. Tried again with maybe a 4 or 5 second shot. No new sawdust for 3 days. But it is back again. Will try one more longer shot. If that doesn't work, I'll have to conclude that Tri-Die doesn't work for carpenter bees. Had to give it a minimum of one star. However, no result merits no stars.

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  • 3 of 3 people found this review helpful:

    5 of 5 stars  Tri-Die
    By John in Suffolk, VA on 05/06/2012
    Verified Purchase

    Had a problem with carpenter bees and did not have time to build a trap or move them someplace else. The Tri-Die worked very quickly.

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Most Recent Customer Reviews
  • 4 of 5 stars  This stuff works!
    By Beth in Upper Penn on 11/25/2017

    Living in a farming area, I've been inundated with cluster flies this year. After looking around for BoridTurbo, which is no longer made, I found Tri-Die. It's like BoridTurbo as it dries to a powder which clings and kills those flies; great for cracks! There is one drawback, though. The spray tubes that come with the product don't fit the sprayer top. The spray does get into the cracks without a tube; I just wish the tube fit for the smaller areas.

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  • 1 of 3 people found this review helpful:

    2 of 5 stars  Tri-Fie
    By Carol in Georgia on 07/03/2016

    It doesn't seem to work very well. I got a few roaches from someone moving articles from a storage unit in temporarily. I've never had any bugs before.

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  • 5 of 5 stars  Tri-Die
    By Harmonie in DAVENPORT on 06/14/2016

    Worked great! Haven't seen an ant in the house since using it.

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  • 4 of 5 stars  Tri Die
    By Steve in englewood, fl on 02/16/2016

    Love this product. Works as advertised. Would give it 5 stars if not for the fact that for the past 2 orders I did not receive the straws that fit into the spray nozzle. Other than that I give it 5 stars.

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  • 1 of 1 people found this review helpful:

    5 of 5 stars  Tri - Die
    By Rocky in Lakeland ,Fl. on 06/17/2014

    this is some of the best chemical I have used in a while. long lasting

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  • 1 of 3 people found this review helpful:

    3 of 5 stars  the jury is out, but so far so good
    By Dlutzker in Oaks, PA on 02/05/2014
    Verified Purchase

    Don't know yet, because there was only one sighting of an ant, and since spraying none, but that is not proof. We'll see, but so far so good (after 2 weeks)

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  • 5 of 5 stars  This is in my GO TO bag...
    By in Riverside, CA on 07/05/2013
    Verified Purchase

    This stuff works great. I love the smell it leaves, like a peppery smell, but It does great at killing ants and keeping them from returning to a treated area. I also love how the little spray stem is punctured so that it shoots all over the place once you get it in a wall void. Awesome job and I hope that this stuff is available for years to come...

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  • 2 of 2 people found this review helpful:

    5 of 5 stars  The real deal
    By Joe in Evansville,In on 05/14/2013
    Verified Purchase

    I had a carpenter bee reinfestation that was going on maybe four years of them being in the spot I finally tried this product and I'm ecstatic this stuff really works the spot was about 24 feet high on it go two story home so its hard for me to get to it I rigged way to get up there to their infestation and spray the area they were starting to die before I could climb back down the ladder that's been about 3 weeks now since I use this product and I'm not seen a carpenter bee sense now I can get back up there and plug the insulation holes. I will always come back to this website if I ever need any more type of pest control items because this saved me about 2 to 3 hundred bucks or more.thanks you Joe

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  • 1 of 1 people found this review helpful:

    5 of 5 stars  AMAZING STUFF!
    By A. in Port Charlotte, FL on 01/19/2013
    Verified Purchase

    This stuff is amazing, we tried all sorts of other pesticides to no avail. Battling Book Lice was quite a struggle. Like I said, nothing else worked until we tried "TRI-DIE". Thank you Tri-Die and especially thank you DoMyOwnPestControl!

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  • 2 of 4 people found this review helpful:

    2 of 5 stars  Tri-Die- 8oz
    By Dorothy in Billerica, Massachusetts on 11/02/2012
    Verified Purchase

    I have used the entire can, it hasn't stopped the silverfish. I find some dead, some pretty active. I was told this is a good product. Just wish there was something that eliminates them for good. They are disgusting!!

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Most Helpful Q&A's

10/07/2010 Bill

QCan you use Tri-Die for bedbugs?
If I understand correctly, you can spray Tri Die on the fold and tufts on your mattress and box spring to instantly kill bedbugs. It has the residual effect of silica gel or DE for future killing. Is this correct?


Tri-Die does contain pyrethrins which offers a fast knockdown of insects when they are sprayed directly, and also contains silica gel for residual control.

According to the product label, "Take bed apart and treat cracks, joints and interior of framework. Mattresses and box springs should be treated especially tufts, folds, and edges. Picture frames, moldings and all cracks and crevices in the room should also be treated."

6 of 6 people found this answer helpful.
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03/09/2011 Daniel

QI've have used Tri-Die, which works very well, but the darn thing jams.


Tri-Die is also subject to clogging, unfortunately that is just the nature of aerosol dusts. If you follow the tip below, you can help prevent any aerosol dust from clogging:

Tip: To prevent aerosol dust from clogging, make sure to turn the can upside down after each period of use and spray until just air leaves the canister.  This will clear the nozzle and keep it from oozing, and prevent clogging.

4 of 4 people found this answer helpful.
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04/24/2014 Olivia

QWhy did more bees show up after I sprayed Tri Die?
I have a little front porch with a roof that covers the entryway. I went outside to spray this in pretty much all the cracks (with the little clear tube that comes with it) and esp. sprayed where I have seen bees hovering around. I sprayed where the exterior wall meets the roof and mostly around the cracks nearest to the doorway. I went to mow the lawn after, and then came back to the front door when I was done and there were two big beefy wasps buzzing and hovering around the porch! And no there is a big carpenter bee too! I don't know if maybe I sprayed a nest? I really don't know how/why they could be attracted to it, but is that possible? I know it sounds silly but I have no idea what the heck is going on now lol. Any advice/thoughts?

AIt sounds most likely that they are not attracted to the Tri Die. Instead you probably sprayed the areas they like to nest and now they cannnot enter so they are just hovering near the areas they used to go into.

3 of 3 people found this answer helpful.
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04/27/2011 Anthony

QCan I use "Tri Die" to treat for Wood Carpenter Bees?
I know Delta Dust is the thing to use then plug hole, but I had someone come and treat my porch and they used a wet spray that dried to a powder that was called "Tri-Die". I read the label on the can for what it kills and it never listed carpenter bees (or any bees for that matter).... Although they were dropping left and right... Is it safe to say that "Tri-Die" will also work in killing these carpenter bees?

ATri-Die contains the active ingredients Pyrethrins and Silica Gel. This combination of active ingredients offers a pretty fast knockdown and residual control of lots of insects, even those the product is not labeled for.

3 of 3 people found this answer helpful.
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04/10/2011 Brian

QWhat area can a can of Tri-Die cover?
How much coverage will one can of Tri-Die provide? For example, if you were to inject the product into holes along a floor into a wall (as I am doing), how much wall could one realistically do? 10 feet, 100 feet?


There is not a coverage area on the product label, because it really all depends on how and what you are treating, and the person that is applying the product is a factor as well.  You do not need a lot of dust per hole or application.  The product comes with a straw that has holes in it so it literally shoots the dust in all directions in a void.  The product label states: Use Tri-Die with the supplied actuator and injection
tubes. Inject Tri-Die into cracks and crevices or void spaces where insects may be harboring, living and
breeding. Place injector tip into cracks, crevices, holes and other small openings. Release approximately one second of product. Move injector tip along cracks while treating at the rate of three linear feet per second. For closed voids calculate the void’s cubic area and treat at the rate of three to five seconds per three cubic feet. For closed void areas drill small access holes. Several holes may be required in long-running voids. This product can leave a white residue. This residue can normally be removed with a damp cloth or sponge. 

Based on the verbiage on the product label of only releasing the product for 1 second per hole, we would imagine you could probably do close to 100 feet of wall space.  This is just an estimate. 

2 of 3 people found this answer helpful.
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Most Recent Customer Questions

07/27/2017 Jack from Bradenton, Fl

QDoes the silica gel in Tri-Die kill ants?


Yes, the silica gel in Tri-Die can kill ants. The silica gel left behind as a residual will cling to their exoskeletons and desiccate them.

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05/11/2017 Jeff from Slocumb, Al

QWill Tri-Die kill roaches?


Yes, Tri-Die is labeled for roaches.† However, if you are dealing with a roach infestation, you likely will need to use other products as well in order to completely eradicate them.† Please take a look at our article on How To Get Rid Of Roaches for more information and tips.†

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03/19/2017 Ma from Rock Springs

QDoes Tri-Die contain silica gel?
I've read some comments about a silica gel that remains? Is that in this product or do I need to purchase it separately? I found tiny worms in my kitchen. They nested underneath my cabinets. We had to saw off the bottom of our cabinets to find their main area. I have taken everything out, vacumed, and wiped down with vinegar, had Orkin come spray, and sprayed cy kick spray 3 different times myself. With the last one being yesterday I still came home to find 2 more dead ones laying in my cabinets. It has been two months and I still have everything out of my cabinets. I desperatley want these things gone and want to put my kitchen back together. What product do you recommend?


Yes, Tri-Die contains both silica gel and pyrethrins as active ingredients in a pressurized insecticide dust. This is an excellent insecticide for crack and crevice and void treatment for many common household insects. This product will not offer quick knockdown, but it lasts for months in undisturbed areas. In order to give you the best advice on your situation, we would need to know what specific pest you are treating. A variety of stored product pests such as grain moths are often found in kitchen areas, and the most important step to treating them would be locating and discarding the infested food items, followed by cleaning, sealing up harborage areas, and residual insecticides.

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08/05/2016 Nancy from Redding, Ct

QShould I worry about Tri-Die getting tracked into the house?
Pest control sprayed for a bees nest and around the house for other insects. 20 minutes later I had a service man come to the house. I am nervous that he brought in the chemical on his shoes and clothes b/c I was told not to leave the house for 2 hours. Should I be worried that he carried something in?


If the Tri Die was applied according to the instructions on the product label there should be no cause for concern.† It would be extremely unlikely that the service person would be able to accumulate enough product on his clothes or shoes in an amount that would be harmful just from walking up to your house.†

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05/20/2016 Cathy from Cleveland, Ohio

QCan Tri-Die be removed?
Hi, I hope you can help. a Pest control officer sprayed Tri-Die dust on two stumps in our back yard. We are now greatly regretting it. I had a few questions. 1. Can the pesticides be removed? 2. What is the typical spray radius, do I need to remove all surrounding shrubbery and soil? 3. What happens to the chemical once it's no longer active after 90 days?


Any insecticides applied on outdoor surfaces will eventually be removed by breaking down in sunlight and/or washed away with rainfall. Tri-Die contains natural pyrethrin, which breaks down quickly in sunlight, and silica gel, a natural dessicant that would likely be washed away quickly. The PBO synergist in the product also breaks down quickly once applied. We are not sure why the product would need to be removed from where it was applied, but you can always use a hose to water the area to remove any residual product.

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08/08/2015 Patty from Gainesville, Fl

QIs Tri-Die safe to use around cat pets?
I need to get rid of bed bugs


Tri Die is safe for pet after it has setteled and dried, 1-2 hours. Please see our Bed Bug Treatment article for the best information about treating for this pest.

1 of 1 people found this answer helpful.
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04/03/2015 Teresa from Batesville, Mississippi

QIf Tri-Die was sprayed all over my whole house in floors, walls, furniture, cabinets, etc., is it safe?
This guy came out to treat my home for brown recluse spiders. We had moved into our home and brought things from storage which contained the spiders. The guy absolutely covered the entire house with TRIDIE! I thought he was just going to spray cracks and crevices. He told us it was not safe to go back home for two days and nights. We went back home and our entire home, furniture, clothes, electronics, food in cabinets, just everything had a thick white powder on it. My home has been destroyed! Cleanup will take months!It looks like baby powder has been dumped all over my home. The floors are all white with powder and it's settled on the walls, light fixtures, window blinds and curtains.


Unfortunately we cannot comment on work done by a pest control company. We can tell you that the product label instructions are law and the product label is available for you to review on our website. The product label does dictate that the product should be used in cracks, crevices, voids and small spot applications. If you feel like these product label instructions were violated we recommend you call your local health department right away.†

We can also tell that the product label does not indicate that you must be out of your home for 2 days or nights when used as directed.†

Tri Die product label:† Label 02212013.pdf

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09/11/2014 Cynthia from Alexandria, Virginia

QCan Tri-Die be used for pantry weevils?
Also, is this safe to use in a cabinet where food will be stored (after spraying)?

AYes, Tri-Die is labeled for weeviles in a pantry. We would recommend removing all the food items out of the pantry before spraying. You will spray the crack and crevices only inside of the pantry. Once the product dries, it is safe to put your food items back into the pantry. Please let us know if you have any additional questions.

1 of 1 people found this answer helpful.
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08/05/2013 Bob from Chalfont, Pa

QIs Tri-Die effective against carpenter ants?

ATri Die will be effective against carpenter ants if you know exactly where the nest is and can spray it directly. If this is not possible, we recommend you use a product such as Phantom Aerosol or implementing a carpenter ant baiting program. These products will be transfered or carried back to the colony so that you will be eliminating the nest and not just the ants that contact treated areas.

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04/02/2013 Steve from New York

QHow long does Tri-Die last after applied into a crack & crevices?

AThe pyrethrin in the Tri-Die will last for a couple of days but the silica gel will last until it is removed or covered up with debris.

1 of 2 people found this answer helpful.
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