Demon WP Insecticide

$7.53 - $253.68

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Not for Sale to: NY, CT
NY residents, see our New York Pest Control page.

$7.53$45.99$44.37$80.04$253.68
  Size/Description Price/Ea. Qty  
Demon WP Insecticide envelope(s) $7.53
Demon WP - 1 lb. Jar jar (1 lb.)

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Demon WP Insecticide - Box (12 envelopes)Demon WP Insecticide - Box (12 envelopes) case (12 envelopes)

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$80.04
Demon WP 1 lb. Jar - CASE (6 jars)Demon WP 1 lb. Jar - CASE (6 jars) case (6 jars)

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For large order quotes, please call us at 1-866-581-7378.

Demon WP Insecticide Demon WP Insecticide Video

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 WP can be purchased as either an envelope of four water-soluble packets (shown here) or a Demon WP 1 lb. jar (equal to 12 envelopes of Demon) with a scooper for easily making up to 48  gallons of solution. Demon should be applied with a sprayer.

The 1 pound size of Demon WP has been discontinued and is no longer being made by Syngenta. Cyper WP is available in a 1 pound jar and contains 40% cypermethrin – the same amount of active ingredient as Demon WP. It will last for years and years and is much cheaper when you buy in the 1 lb. jar.


Active Ingredient: Cypermethrin 40%
Target pests: ants, carpenter ants, cockroaches, crickets, spiders and certain other insect pests.
Application: Demon WP leaves a white powdery film that is especially noticeable on dark surfaces.
Yield: 1 envelope contains 4 water-soluble packets and makes 2-4 gallons of solution.

1 pound jar makes 24-48 gallons depending on the concentration rate that you use (see label for recommended rates). 1 jar is equal to 12 envelopes of Demon WP.
NOT FOR SALE TO: NY, CT
Manufactured By: Syngenta



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.

ACTIVE INGREDIENT: Cypermethrin 40%

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:
1. Fill applicator tank 1/2 with water.
2. Add desired Demon WP Insecticide in Water-Soluble Packet(s).
3. Allow 1-2 minutes for dissolution of water-soluble packet(s).
4. Agitate, stir or shake applicator tank.
5. Finish filling applicator tank and agitate again before use to ensure satisfactory suspension.
 

Follow the above mixing instructions for Demon WP 1 lb. jar.

Note:
• 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.

Tank Mixing
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.

1 pound jar makes 24-48 gallons of finished solution. 1 jar is equal to 12 envelopes of Demon WP.

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.

Indoors-

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.

Ants
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.

Outdoors-

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.

Outdoor Surfaces

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.

Scorpions

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.

*1 lb. jar comes with convenient scoop for quick and easy measuring.

*1 lb. jar is very economical.

*Pet safe after dry, when used as directed
 

Extra Tips

*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.
 

Compare to: Cyper WP, Cynoff WP

Rating Snapshot

5 stars   511
4 stars   58
3 stars   12
2 stars   8
1 star   13

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Average Customer Rating
4.7 star rating (602 reviews)

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Most Helpful Customer Reviews
  • 184 of 196 people found this review helpful:

    5 of 5 Stars  Phenomenal Product
    By Matt on June 2, 2009
    Verified Purchase

    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% 

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  • 161 of 165 people found this review helpful:

    5 of 5 Stars  Awesome
    By George on March 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.

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  • 116 of 124 people found this review helpful:

    5 of 5 Stars  This stuff is awesome!
    By Kevin on August 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.

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  • 89 of 93 people found this review helpful:

    5 of 5 Stars  Try it and you will be satisfied!
    By Chris on February 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.

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  • 85 of 91 people found this review helpful:

    5 of 5 Stars  Try this product!
    By Joyce on July 6, 2008
    Verified Purchase

    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!!

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Most Recent Customer Reviews
  • 5 of 5 Stars  Deamon WP Insecticide
    By Charles on April 21, 2014

    Have not use it but have used it early I know this is a great insecticide.

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  • 1 of 1 people found this review helpful:

    5 of 5 Stars  Demon WP Insecticide
    By Beverly on April 12, 2014
    Verified Purchase

    This is the best insecticide! I have used it for years.

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  • 1 of 1 people found this review helpful:

    5 of 5 Stars  Demon experience
    By Jim on April 9, 2014

    Used the Demon in front of my garage and doors. Next day dead bugs that never got beyond the Demon. Very fine powder so be careful when you open the container because it will start to float out. Where a mask or just be careful and slowly open it.

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  • 1 of 1 people found this review helpful:

    5 of 5 Stars  Great Product To Keep Pests Out of House
    By Steve on April 9, 2014

    Have used this product for years on the outside walls and doors of our house here in Florida and have never had any problems with roaches, ants, etc. in our home. Couldn't do without it. Great price from this seller.

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  • 1 of 1 people found this review helpful:

    5 of 5 Stars  great profuct
    By Mir on April 7, 2014
    Verified Purchase

    Easy to apply. Working great. Haven't seen any bugs that all since applying this product. Great delivery time too

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  • 1 of 1 people found this review helpful:

    5 of 5 Stars  Success of Insecticide
    By Irene on April 3, 2014
    Verified Purchase

    very pleased so far with the results!This is all I have time to write!

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  • 2 of 2 people found this review helpful:

    5 of 5 Stars  So Far So Good!
    By AL on March 31, 2014

    It has been almost a month and so far no pesky pest seen. I will do another update in another month or so.

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  • 2 of 2 people found this review helpful:

    5 of 5 Stars  demon wp
    By Stan on March 27, 2014
    Verified Purchase

    i have used demon for years. its easy, fast, and effective

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  • 2 of 2 people found this review helpful:

    5 of 5 Stars  Best result
    By Joaquin on March 27, 2014
    Verified Purchase

    I tried everything, however this is the best. I highly recomend this product.

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  • 1 of 1 people found this review helpful:

    5 of 5 Stars  Best Deal I Could Find.
    By John on March 25, 2014
    Verified Purchase

    The delivery was timely, the contents were correct and excellent quality. I will make other purchases from DoMyOwnPestControl.

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Most Helpful Q&A's

September 6, 2009 Scott asked:

QIs Demon WP safe around children and pets?

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. 

176 of 179 people found this answer helpful.
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May 16, 2010 Tim asked:

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. 

65 of 67 people found this answer helpful.
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July 17, 2010 Diane asked:

QIf you don't use the Demon WP mixed with water, will it still be good to use later?

ADo not mix Demon WP until you are ready to use it and never mix more than you can use at one time. Demon WP should be used within 24 hours after being mixed with water.

56 of 59 people found this answer helpful.
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August 31, 2009 Daniel asked:

QDoes Demon WP kill fleas?

A

Demon WP does kill adult fleas, but it will not effect flea eggs or other stages.  It is always adviseable to mix an IGR (Insect Growth Regulator) with the product you are using. An IGR mixed with Demon WP will help slowdown the reproduction process and yield better results. Demon WP is also only labeled to treat fleas outside as it cannot be applied as a broadcast treatment indoors (where fleas will be present). For indoor flea treatment products, please click the link below.

 

Indoor Flea Treatment Products

55 of 58 people found this answer helpful.
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March 11, 2010 Jim asked:

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.

49 of 50 people found this answer helpful.
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Most Recent Customer Questions

April 17, 2014 Jonathan from Waynesville,nc asked:

QIs Demon WP safer around my 6 month old baby?
I have fleas in my apartment, is it safe to use around my 6 month old baby and how long do we have to stay out before going back in?

A Demon WP is not labeled for indoor flea control.  You would want to use a product such as Precor 2000 Plus Premise Spray. This product is easy to use and is safe to broadcast all over your floor surface. Precor 2000 Plus Premise Spray will kill adult fleas but also stop the reproductive cycle of those flease preventing them from laying more eggs. You would want to keep your baby and all children out of the treatment area until it dries completely. It normally takes a couple of hours to full dry. Once it has dried it is safe for you to bring your baby back into the treated area.

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April 13, 2014 Tom from Ohio asked:

QDoes it kill Carpenter Bees?

A Demon WP Insecticide will carpente bees that come in contact with the treated area.

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March 21, 2014 Auzanett from Somerville, Tx asked:

QWill Demon WP affect livestock or goats?

A Demon WP should not be applied near any animal during application and they should not enter an area treated with the product until it has completely dried. Demon WP Insecticide is NOT labeled to be applied to areas where animals graze.

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March 14, 2014 Crystal from Crockett Texas asked:

QWill Demon wp kill buffalo gnat?
We are having an issue with buffalo gnats or black flies. We found there nest. Will it work if we just pour a bunch in the water and spray the surrounding areas??

A Yes, Demon Wp should kill the buffalo gnats. For the nest you want something that will provide an instant knock down like CB- 80 aerosol. Let us know if you have any other questions, please.

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March 13, 2014 Jeri from Frametown, Wv asked:

QCan you recommend a product as affective as Demon WP, but without the white powdery residue left.
I have used Demon WP, and I like it a lot. Don't like the residue on my cedar siding, but don't want to give up the results I got from it.

A Yes, Martins Viper contains the same active ingredient, but will not leave a white residue. Please be sure to check the product label and make sure the specific insects you are treating for are listed.

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March 12, 2014 John asked:

QWhen spraying Demon WP do we need to stay out of the home for 30 min or are vapors non toxic?
I have a dog but he will be in a Kennel inside during the treatment will he be ok

A

Demon WP is safe to spray indoors. It is advised that all animals, children, and other people be out of the treatment area until the area has dried, typically 30 mins to 1 hour.

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March 6, 2014 Mickey from Washington Missouri asked:

QDoes Demon WP kill huge house centipedes and spiders?
If so, how long does it take? I used DE all over my apartment and it did not work and now a infestation is apartment and it's literally driving me out of my apartment. These things are huge and I have not seen one dead one but find evidence that it appears to be centipedes or huge spiders I'm ready to leave everything I own and walk out for good. Please help me the little ones are biting me while I sleep and get in my hair. I find wads of my hair spiraled into little balls all over my apartment in my clothes. I can not afford an exterminator and I am at my wits end. PLEASE HELP ME

A Demon WP is labeled to treat centipedes and spiders. It doesn't sound like you are treating for centipedes or spiders based on the description you provided. Please contact one of our experts for free advice at toll-free 866.581.7378 M-F 9-5PM EST.

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January 27, 2014 Megan from Palmetto asked:

QAfter Talstar P dries, will it affect the dog if he licks the treated area?

A Talstar P is safe for people and pets after the treated area has dried. After Talstar is diluted, there is only a large enough amount of active ingredient to kill small insects.

1 of 2 people found this answer helpful.
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January 20, 2014 Thomas from Bakersfield, Ca asked:

QI have 42 4-plex apts in Bakersfield,Ca. that I want to self maintain ext. & int.
Could you recommend product, thinking Demon WP for exterior. Also, suggestions for interior ants and American roaches. Thanks

A Demon WP is an excellent broad spectrum insecticide that can be used safely and effectively indoors and outdoors for roaches, ants, and most other comon insects. Keep in mind that because the Demon WP is a wettable powder, it will leave behind a white film that can be noticable on darker colored surfaces. If your units have white or light colored molding or baseboards then the residue will not be noticeable. If you are wanting an indoor insecticide that dries completely clear then Suspend or Talstar would be great options. Typically, baits work best for ants since ants are normally foraging for food. Providing them with a bait that they can take back to the colony and share is usually more effective then spraying for ants. Advion Ant Bait gel is a fantstic ant bait that is labeled to kill most ant species. If an ant spray is preferrable, then Suspend SC would be your go to ant spray for indoor control.

1 of 1 people found this answer helpful.
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December 11, 2013 Ted from Phila. Penna. asked:

QNo ventilation my arms are burning after spraying Demon Wp.
I SPRAYED WP DEMON IN A SMALL 1R ROOM APT. AND HAVE BURNING FEELINGS IN EXPOSED AREAS OF MY SKIN WHAT CAN I DO? I WASH THE AREAS OFTEN.

A We have not heard of Demon Wp burning exposed skin after application. We recommend to contact the manufacturer Syngentea at 866-796-4368 for further instructions.

2 of 2 people found this answer helpful.
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