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Demon WP is an excellent professional insecticide that's perfect for crack and crevice and/or spot applications for residual and contact control of Ants, Carpenter Ants, Cockroaches, Crickets, Spiders and many other insect pests. Demon should be applied with a sprayer.
The 1 pound jar size of Demon WP has been discontinued and is no longer being made by Syngenta.
|Active Ingredient:||Cypermethrin - 40%|
|Target pests:||Ants, Carpenter Ants, Cockroaches, Crickets, Spiders and others
* See label for complete list
|For use in:||Commercial and Residential, on and around Buildings, Lawns, Trees and Shrubs for Athletic Fields, Industrial Buildings, Parks and Recreational areas and others
* See label for complete list
|Application:||1 packet per gallon of water (for 0.1% active ingredient)
2 packets per gallon of water (for 0.2% active ingredient)
* See label for complete application instructions
|Yield:||1 envelope contains 4 water-soluble packets and makes 2-4 gallons of solution|
Group 3 Insecticide
|NOT FOR SALE TO:||NY, CT|
|Special Features:||Demon WP leaves a white powdery film that is especially noticeable on dark surfaces|
|Shipping Weight:||0.11 lbs|
How Demon WP Insecticide Works
Demon WP is a residual insecticide concentrate with the active ingredient Cypermethrin. Cypermethrin is in the synthetic pyrethroid class of insecticides. It is a man-made active ingredient that attacks the central nervous system of insects that come in contact with or ingest it. Demon WP is diluted with water and applied with a gallon pump sprayer. After it dries, Demon WP continues to work for up to 3 months.
Demon WP Target Pests
A variety of crawling and flying pests including (but not limited to) ants, boxelder bugs, cockroaches, crickets, earwigs, scorpions, spiders, and wasps
PESTS CONTROLLED WITH THIS PRODUCT: Ants, Aphids, Assassin Bugs, Bees, Boxelder Bugs, California Oakworm, Carpenter Ants, Carpenter Bees, Centipedes, Chiggers, Chinch Bugs, Cluster Flies, Cockroaches, Crickets, Earwigs, Elm Leaf Beetle, Fire Ants (Mounds), Firebrats, Fleas, Flies, Millipedes, Mites, Mosquitoes, Pillbugs, Scorpions, Silverfish, Sod Webworms, Sowbugs, Spiders, Termites (above ground only), Ticks, Wasps
Target Uses of Demon WP
Demon WP (Water-soluble Packets) Insecticide is for crack and crevice and/or spot applications for residual and contact control of Ants, Carpenter Ants, Cockroaches, Crickets, Spiders and certain other insect pests. The Demon WP water-soluble packets make mixing and use very easy when used with a 1 gallon compressed air sprayer. (See our selection of sprayers in our Sprayers section).
Demon WP (Wettable Powder) is excellent for larger, tougher pests such as cockroaches, spiders, scorpions, or stink bugs because there is a high concentration of active ingredient. Demon WP is labeled for a wide variety of pests, however, making it an extremely popular general use insecticide for perimeter treatments outdoors or crack and crevice treatments indoors.
The wettable powder formulation also makes Demon WP ideal for porous surfaces such as concrete since the individual particles of active ingredient are larger and can more easily stay on top of the surface.
Demon WP leaves a white powdery film that may be visible on darker surfaces. For applications where this is a concern, consider using a liquid concentrate instead.
Demon WP Insecticide Application Instructions
Each foil envelope of Demon WP Insecticide in Water-Soluble Packets contains four water-soluble packets of Demon wettable powder (WP). The foil envelope must be opened for use. Because water-soluble packets readily dissolve in the presence of moisture, do not allow them to get wet before adding to the applicator tank.
Wear dry gloves when handling the water-soluble packets. Handle with care because excessive handling may cause rupture of the water-soluble packet. Unused water-soluble packets should be stored in the original foil envelope, folded over to minimize exposure to moisture.
Demon WP Insecticide in Water-Soluble Packets are intended for dilution with water for applications. For best results, dilution should be achieved if the following steps are taken:
- Fill applicator tank 1/2 with water.
- Add desired Demon WP Insecticide in Water-Soluble Packet(s).
- Allow 1-2 minutes for dissolution of water-soluble packet(s).
- Agitate, stir or shake applicator tank.
- Finish filling applicator tank and agitate again before use to ensure satisfactory suspension.
- Upon standing without agitation for more than 1 hr., the applicator tank should be agitated, stirred or shaken again to achieve satisfactory suspension.
- Make up only amount of application volume as required.
- This product should not be applied with oil.
Demon WP in Water-Soluble Packets may be tank mixed with other currently registered pesticides unless expressly prohibited by the product label. A small volume mixing test with the other products is recommended to ensure compatibility. Observe all restrictions and precautions which appear on the labels of these products.
* Repeat treatments as necessary, but not more than once every 7 days.
Always read the product label completely before use.
1 envelope contains 4 water-soluble packets and makes 2-4 gallons of finished solution.
Standard Application Dilution rates / Mixing Ratios for Demon WP:
* 1 packet or 1 scoop (0.33 oz.)/gal. of water – 0.1% – maintenance, more frequent applications, foliar applications
* 2 packets or 2 scoops (0.66 oz.)/gal. of water – 0.2% -- clean-out, severe infestations, exterior applications which receive greater direct sunlight, scorpions
* For Perimeter Barrier Applications around Structures – Mix 1-2 scoops of Demon WP in 1-5 gallons of water to cover 800-1600 square feet. Higher volumes may be needed for dense vegetation or landscaping materials.
* 1 scoop is the equivalent of 0.33 oz., 9.5 gm., or 2 level tablespoons
Demon WP is for use in the following areas:
Demon WP is for crack and crevice or spot treatment for residual and contact pest control in, on and around buildings and structures and their immediate surroundings and on modes of transport. Permitted areas of use include, but are not limited to, industrial buildings, houses, apartment buildings, laboratories, buses, greenhouses and the nonfood/feed areas of stores, warehouses, vessels, railcars, trucks, trailers, aircraft (cargo and noncabin areas only), schools, nursing homes, hospitals (non-patient areas), restaurants, hotels and motels, and food manufacturing, processing and servicing establishments, food granaries, food grain mills, and pet kennels. Demon WP is also for use on lawns, ornamental trees and shrubs around residential, institutional, public, commercial, agricultural and industrial buildings, and parks, recreational areas and athletic fields.
Demon WP Authorized by the USDA for use in inedible product areas in Federally inspected meat, poultry and egg processing plants.
See above for complete mixing instructions.
Cockroaches, Spiders, Crickets, Scorpions, Silverfish, Ticks and Firebrats
Apply as a coarse, low pressure treatment to areas where these pests hide, such as baseboards, corners, storage areas, closets, around water pipes, doors and windows, attics and eaves, cabinets, sinks, furnaces, stoves, behind and under refrigerators, the underside of shelves, drawers and similar areas. Pay particular attention to cracks and crevices; also see Outdoor Surface Use on the product label.
Apply Demon WP to any trails, around doors and windows and similar areas where ants (including carpenter ants) may be found. Apply perimeter barrier treatments to prevent infestation as described below; also see Outdoor Surface Use on the product label.
Bees, Carpenter Bees and Wasps
Thoroughly treat nest and entrance, surfaces and surrounding areas with Demon WP where these insects alight; also see Outdoor Surface Use on the product label.
Assassin Bugs, Boxelder Bugs, Sowbugs, Pillbugs, Millipedes, Elm Leaf Beetle and Centipedes
Apply around doors and windows and similar areas where these, or similar perimeter pests, may be found or where they may enter premises. Apply to baseboards, storage areas, and other locations.
See above for complete mixing instructions.
For Perimeter Barrier Treatments
To help prevent infestation of buildings, apply to a band of soil and vegetation 6-10 ft. wide around and adjacent to the building. Also, treat the building foundation to a height of 2-3 ft. where pests are active and may find entrance. Apply as a coarse spray treatment to thoroughly and uniformly wet the foundation and/or band area, using 1-5 gals. of treatment solution applied to 800-1600 sq. ft.
Apply with either hand-held or power application equipment as a residual spray to surfaces of buildings, porches, screens, window frames, eaves, patios, lawns, refuse dumps, garages and other similar areas where these pests are found. Also, may be used as a spot treatment in applications to lawns in landscaped areas in and around residential, commercial, institutional and industrial buildings, and similar areas where these insect pests are active.
Fire Ants (Mounds)
For individual fire ant mounds, apply Demon WP as a drench. Gently sprinkle a total of one gallon over the surface of mounds up to 12 inches in diameter. Use 2 gallons for larger mounds. Thoroughly wet mound and surrounding area. Treat new mounds as they appear. Pressurized sprays may disturb the ants and cause migration. If possible, applications should be made on warm days after recent rainfall. All colonies in the vicinity should be treated, including those that have not yet constructed a mound.
Treat and remove accumulations of lumber, firewood and other materials that serve as harborage sites. Apply as a coarse spray treatment to the point of drip.
* Demon WP is not appropriate for applications using a hose-end sprayer.
* See product label for complete outdoor application instructions.
Demon WP Insecticide Features
- Water-soluble packets are convenient and simple to use.
- Pet safe after dry, when used as directed.
- Some settling may occur after tank mixing Demon WP. Be sure to agitate the tank after resting, and only mix the amount of product you intend to use within 24 hours.
- Store concentrate out of direct sunlight and extreme temperatures for maximum shelf life of 3+ years.
- Not labeled for use on edible plants.
- Exposure to direct sunlight will break down residual more quickly, so applications may need to be made more frequently in these areas.
- Repeat treatments as necessary, but not more than once every 7 days.
- Demon WP is not suitable as a space spray with equipment such as misters, foggers, or aerosol equipment. The product will clog or damage the equipment and is not labeled for this use.
See all 889 reviews »
507 of 540 people found this review helpful:
By Matt in Burnsville, North Carolina on 06/02/2009
Excellent product. I have been using Demon WP Insecticide for MANY years mostly for exterior barrier treatment and in and around garages. I was very impressed. I will never forget the first time I used this product. I sprayed a heavy line in front of our 3 car garage which was getting bombarded by all kinds of crawling insects. It created about a 10-12" line on a hot & sunny day and it dried very quickly. I did it a second time thinking it evaporated, again it dried within a few mins. Came home from work the next day and a solid line of dead bugs exactly where I sprayed. Was as if it was an invisible electric fence. At this point I was sold on this and nothing else. I have continued to use it for years without fail. I found it lasts quite a while but depends on how much direct rain the treated surface area gets. Recommend 100%
469 of 491 people found this review helpful:
By George on 03/22/2009
"It just works" says it all. I have been using Demon WP Insecticide for 10 years. Forget what you read about multiple applications per year. Maybe outside, but inside, unless you wash or vacuum it away, it lasts forever. I haven't used it in 2 years indoors and it's still killing. I thought, after two years, though, another application couldn't hurt. The first time you use it, when you wake up the next morning, you will be in awe of the dead insects in your house. Just do every base board, even in cabinets and closets and every threshold into your house, garage, carport, etc...threshold exteriors need to be repeated if exposed to the elements. This stuff is the last word in pest control. Don't waste your money on supermarket and building supply store junk and pest control companies that come out and use this same stuff, and bill you $250.
373 of 397 people found this review helpful:
This stuff is awesome!
By Kevin on 08/28/2007
I have 2 large dogs in my house. Had fleas really bad. I tried every type of bug bomb- Home Depot, Lowes, and Walmart had and it seemed like they multiplied. My parents turned me on to this product Demon WP. I sprayed my baseboards, windows, doors, weep holes in the brick, the entire perimeter of the house, the soffit on the house, and the perimeter of my yard. After all that, I still had 2 pouches left, so I went ahead and sprayed my lawn. I have not seen another live bug in the house for 2 years. I may not have applied it the way I'm supposed to, but this stuff is awesome. Highly recommended.
277 of 290 people found this review helpful:
Try it and you will be satisfied!
By Chris on 02/21/2006
I have used Demon WP and I know it works . If you have a roach problem in your home this will kill them and will keep killing for months . It goes on wet and dries to a powder . You will be seeing dead roaches in 24 hours and 1 application will last months of killing power . It is safe too, I have pets and a small child and have never smelled or had a problem like pest control services cause . Try it and you will be satisfied.
194 of 220 people found this review helpful:
Try this product!
By Joyce on 07/06/2008
Great product!! I've been using this product for 2 years and living by the ocean, we have our fair share of palmetto bugs, roaches and every crawly bug known to man. Demon WP keeps the house insect-free and considering I have a bug phobia, this means a great deal knowing that there aren't any unwelcome pests crawling around our home. Anyone having a problem with bugs should try this product...you'll be glad you did!!
DEMON WP INSECTICIDE
By G.w. in KINGMAN, ARIZONA on 11/17/2017
I used cyper wp to control black widow problems, and it works better than anything I've ever used. Now that it's no longer available, I tried demon wp, and the results are just as good as the cyper wp, thank god. Thanks for such a reliable product. I only wish it came in one gallon powdered containers like the cyper wp did. Packets only, but hey, it still works. Thanks.
By Johnny in Eastman georgia 31023 on 11/15/2017
I've been using this product for around 15 years plus. Best I ever used. Don't waste your money in the stores you will be well pleased and don't expect to see it happen over night, give it two weeks, I guarantee you want buy anymore from any store. Don't take my word for it, just try it.
Have used this product for years and highly recommend it
By E in Punta Gorda on 11/10/2017
We use this and appreciate its effectiveness and have recommended it to others
By Angela in Hickory NC on 11/04/2017
When I tried to work things out with my ex he wound up moving roaches into my very clean home in his things! I just about lost my mind! I initially bought a new sprayer just for this product. I put two tablets in it and mixed with warm water. Mixed it well. Then I sprayed all the base boards , guest bedrooms, downstairs, garage, wash room. After the intial mixture I wound up seeing a total of 3 more roaches. I nearly lost my mind again! I called my exterminator this time! Guess what he told me?? That I shouldnt have been able to buy Demon WP and that was the strongest thing on the market and what he used! He then told me to remove EVERYTHING from my cabinets and spray good back in there and all base boards and such again. This time I only used half the amount of water and the final two tablets (packets). I sprayed it everywhere and since that spraying so far I havent seen any roaches! Im praying I dont ever again as I never had till my ex brought them back in with his junk! He is gone and so are the roaches! I would recommend this product to anyone. I had already ordered my next shipment that morning before I used my final 2 packets! I also put down roach bait traps and roach motels and some sticky mouse cathching pads. Im praying they stay gone! If not I will keep spraying!!
A satisfied customer
By Pat in Merlin on 11/03/2017
I have used Demon WP for years, great product. The production date was only a couple of months old very fresh! I am one happy customer great price.
No spiders, stink bugs or anything!!!!
By Givonna in Ohio on 11/03/2017
I mixed Demon WP and the Cyzmic CS according to directions then applied according to the video directions. I have not seen a bug, ant, spider, bee nor stink bug since! Not even outside my front porch or back deck and I sprayed a month ago.
By Dennis in Sebring. Florida on 11/03/2017
Been using demon for 10 years here in Florida and let me just say IT WORKS. It keeps all the bugs at bay.
Demon WP Insecticide
By Alicia in Heflin on 10/31/2017
This stuff is the best! I have used it for over 10 years. My bug man (exterminator) was getting old and told me this is what his company used. He said it even killed termites, he said they won't tell you that so you can hire someone else to do that. He said it kills all bugs.
By Nicole in Reseda California on 10/20/2017
This stuff works great! I bought it based on reviews after we kept seeing HUGE cockroaches in our home. Lately our neighborhood has been getting bigger infestations and I just cannot deal with it anymore after finding two in our bedroom, one meeting me face to face while brushing my teeth, one in my sons nursery and one under the sink when I went to pull a strainer out while making dinner (needless to say I did not think a grown woman could make a noise like that). I had enough. My husband mixed and sprayed this marvelous product and he said within minutes he was able to see insects crawling upward and outward to escape from the house. I will absolutely be purchasing again to keep the pests out
By Linda in Robertsdale, AL on 10/20/2017
I've used this product for years. I've never found anything better. It doesn't have a scent so it's tolerable in the house. And what a bargain from this company! You will not be disappointed.
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QIs Demon WP children safe when sprayed inside the home?
ADemon WP is safe to use around children and pets when mixed and used correctly. With most professional products such as Demon WP, once you mix it with water it is only strong enough to kill small insects. You should always keep children and pets away from where you are treating. Once the product has time to dry which usually only takes 30 minutes, it is safe for children and pets to re-enter the room. Of course you should always keep any pesticide or cleaning product out of reach of children.
QIf you don't use the Demon WP mixed with water, will it still be good to use later?
QCan Demon WP be sprayed on the outside of a home and still be effective?
A Demon WP is labeled for both indoor and outdoor use. Apply Demon WP to exterior door frames, window frames, places where utilities (cables pipes and wires) enter into the structure, eaves, soffits, around the bottom of the foundation and out onto the ground several feet. If you have an existing insect infestation, you may also need to spray indoors around the door frames, window frames, places where utilities (cables, pipes and wires) enter into the structure and around the baseboards. Demon WP will last for about 4 weeks outdoors and about 12 weeks indoors.
Demon WP is labeled for both indoor and outdoor use. Apply Demon WP to exterior door frames, window frames, places where utilities (cables pipes and wires) enter into the structure, eaves, soffits, around the bottom of the foundation and out onto the ground several feet. If you have an existing insect infestation, you may also need to spray indoors around the door frames, window frames, places where utilities (cables, pipes and wires) enter into the structure and around the baseboards. Demon WP will last for about 4 weeks outdoors and about 12 weeks indoors.
10/11/2011 Christy from San Antonio, Texas
QWhat is the difference between Demon WP and Demon MAX?
ADemon Max is made by the same company that makes Demon WP and they both contain the same active ingredient. The main difference is Demon Max is more intended for use as a termiticide to treat and protect homes against termites. Demon WP is more for insect control inside and outside homes.
QHow toxic is Demon WP to fish and dogs?
I have a pond with catfish approx. 50 yards from my house and during hard rains water runs off form the house area into the pond. I'm having a big problem with scorpions.
A Demon WP is not a problem to use around pets as long as you apply it according to the product label. Once Demon WP is mixed with water, it is only strong enough to kill small insects. You would not want to leave the jar of Demon WP open where dogs could get into a large quantity of it. It is always a good idea to keep pets and children out of the area while you are treating. Once the product dries, usually after 30 minutes, it is perfectly fine to allow pets and children back in the area. However, all pesticides are very dangerous to fish and aquatic life. You would not want to use Demon WP or any other pesticide near a body of water. 50 yards away is a good distance, but if the land sloped down towards the pond, then there may be a concern. If it does not, it should not be a problem to treat around your home that is 50 yards away from the pond.
Demon WP is not a problem to use around pets as long as you apply it according to the product label. Once Demon WP is mixed with water, it is only strong enough to kill small insects. You would not want to leave the jar of Demon WP open where dogs could get into a large quantity of it. It is always a good idea to keep pets and children out of the area while you are treating. Once the product dries, usually after 30 minutes, it is perfectly fine to allow pets and children back in the area. However, all pesticides are very dangerous to fish and aquatic life. You would not want to use Demon WP or any other pesticide near a body of water. 50 yards away is a good distance, but if the land sloped down towards the pond, then there may be a concern. If it does not, it should not be a problem to treat around your home that is 50 yards away from the pond.
07/24/2017 Allie from Corpus Christi, Tx
QIs Demon WP Insecticide pet safe?
Im worried that my dog may have licked some of the demon liquid prior to it drying. I sprayed the whole house and then took her for a walk while it dried.. right when we got back to the house she threw up nothing but stomach acid and water.. she has no history of intestinal problems and my boyfriend thinks she probably licked some while i was in another room spraying. What should i do?
A Demon WP Insecticide†is pet safe as long as you follow the manufactuers labeled instrunctions. †Remove any animals from the areas being treated and keep them out of those areas until the product has had ample time to dry. †We suggest a minimum of a couple hours. †If your pet came in contact with the insecticide before it was dry and they are having a reaction we suggest you immediately contact your vetanarian and have your pet checked out.
Demon WP Insecticide†is pet safe as long as you follow the manufactuers labeled instrunctions. †Remove any animals from the areas being treated and keep them out of those areas until the product has had ample time to dry. †We suggest a minimum of a couple hours. †If your pet came in contact with the insecticide before it was dry and they are having a reaction we suggest you immediately contact your vetanarian and have your pet checked out.
07/11/2017 Steve from Moody
QDoes Demon WP Insecticide kill flea eggs /larvae?
A Demon WP Insecticide†will kill adult fleas outdoors only 1-2 days †after the lawn is mowed. It is mixed at 1-2 packs per gallon of water per 1,000 sq ft. Please take a few moments to review our article/videos on How to Get Rid of Fleas for a successful eradication program.
Demon WP Insecticide†will kill adult fleas outdoors only 1-2 days †after the lawn is mowed. It is mixed at 1-2 packs per gallon of water per 1,000 sq ft. Please take a few moments to review our article/videos on How to Get Rid of Fleas for a successful eradication program.
06/28/2017 George from Indian Harbour Beach
QDoes Demon WP smell?
A Demon WP Insecticide has a slight aromatic scent that will dissipate as the surfaces dry and the area is properly ventilated. Please be sure to mix 1-2 packs per gallon of water per 1,000 sq ft and apply quarterly to the interior crevices/monthly to listed exterior areas.
Demon WP Insecticide has a slight aromatic scent that will dissipate as the surfaces dry and the area is properly ventilated. Please be sure to mix 1-2 packs per gallon of water per 1,000 sq ft and apply quarterly to the interior crevices/monthly to listed exterior areas.
06/26/2017 Cecilia from Bryant, Arkansas
QHow long after spraying Demon WP Insecticide is it waterproof?
A The label states to apply Demon WP Insecticide†in calm weather when rain is not predicted for the next 24 hours will help to ensure that wind or rain does not blow or wash pesticide off the treatment area.
The label states to apply Demon WP Insecticide†in calm weather when rain is not predicted for the next 24 hours will help to ensure that wind or rain does not blow or wash pesticide off the treatment area.
06/24/2017 Jessica from Prospect, Tn
QI have honey bees on my property. Is it safe to use Demon WP Insecticide?
06/21/2017 Shon from Houston, Tx
QIs Demon WP harmful if inhaled or swallowed?
A If swallowed:† If inhaled: †
06/04/2017 James from Georgetown, Texas
QWill Demon WP Insecticide control scorpions?
A Demon WP Insecticide will kill scorpions. Dilute 2 packets per gallon of water.
Demon WP Insecticide will kill scorpions. Dilute 2 packets per gallon of water.
06/02/2017 Hlong from Texarkana
QCan Demon WP be used for treatment of flies?
A Demon WP Insecticide†will kill flies that come in contact with the treated surface long enough to receive a lethal dose. Please review our treatment article on†How to Get Rid of Flies†for a more successful eradication program.
Demon WP Insecticide†will kill flies that come in contact with the treated surface long enough to receive a lethal dose. Please review our treatment article on†How to Get Rid of Flies†for a more successful eradication program.
05/27/2017 Tim from Beaumont
QAfter spraying Demon on manure to kill ants, how long before I can use it in my garden?
After spraying Demon to kill ants on my rabbit manure can I still use in my garden for fertilizer? And if so how long do I have to wait to put in my garden?
A Demon WP Insecticide†should not be applied to any manure or compost that would be used for edibles.
Demon WP Insecticide†should not be applied to any manure or compost that would be used for edibles.
05/19/2017 Michael from Milton, Fl
QHow often should I spray Demon WP?
A Demon WP Insecticide can be applied every 21 days as needed.
Demon WP Insecticide can be applied every 21 days as needed.