Demon WP Insecticide
Demon WP Insecticide Demon WP Insecticide

Demon WP Insecticide

SYNGENTA

Demon WP Insecticide

Demon WP Insecticide is a broad spectrum insect killer that comes in pre-measured water-soluble packets. It is used to provide fast control over various species of insects. Demon WP is safe to use indoors for cracks and crevices or outdoors on surface areas.
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Demon WP Insecticide Product Page
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Demon WP Insecticide is manufactured by Syngenta and is a broad-spectrum insecticide that provides a fast kill and long-lasting residual barrier. It is a wettable powder made with the powerful active ingredient, cypermethrin, and comes in packets that dissolve in water. The pre-measured Demon WP Insecticide packets make the mixing process quick and easy without the mess.

Demon WP Insecticide is safe to use indoors and outdoors to control for spiders, ants, aphids, chinch bugs, mosquitoes, and more. Demon WP is an excellent product to use when making cracks and crevice applications indoors or broadcast applications outdoors for up to 60 days of control.

Applying Insecticide

Tools Needed

To apply Demon WP Insecticide a backpack sprayer, handheld pump sprayer, or spray rig is required. We recommend using a handheld pump sprayer for DIY homeowners to make indoor or outdoor applications.

How to Use

  • Step 1: Measure the treatment area (length x width) to determine how much Demon WP you will need. Demon WP comes in pre-measured packets which can cover 1,000 sq. ft. when mixed with a gallon of water. So, for example, if you have measured a 3,000 sq ft area, you will need 3 packets of Demon WP mixed with at least 3 gallons of water.
  • Step 2: Before mixing, be sure that your gloves are dry as any moisture that comes into contact with the packets may cause them to prematurely dissolve. In your sprayer, fill the tank with halfway with water. Open the foil packet and take the appropriate amount of water-soluble packets and drop it in the tank. Let the packets dissolve (about one to two minutes), and then shake the spray tank. Then add the other 1/2 gallon of water and shake the spray tank again until thoroughly mixed. Shake the spray tank periodically when making applications to prevent clogging.
  • Step 3: Apply as a coarse, low-pressure spray to areas where treatment is needed. Apply as a fan spray when spraying surfaces and vegetation and a pin stream setting when treating cracks and crevices. Reapply every 30 to 60 days depending on the targeted insect and the severity of the infestation.

Where to Use

Applying Insecticide

Demon WP Insecticide is great for residential, commercial or industrial areas. When used as a crack and crevice treatment, apply it around baseboards, behind cabinets, under appliances, corners of walls. It can be used as a spot treatment indoors as well, but not as a broadcast application.

For outdoor use, apply Demon WP Insecticide to lawns, ornamental trees, plants, window screens, building perimeters, directly to exterior walls, fire ant mounds, and other areas listed on the label. Do not apply Demon WP Insecticide to golf courses.

When to Use

Demon WP Insecticide can be used as a preventative treatment and applied to areas outdoors to prevent insects from coming indoors. It can be used as a spot treatment to kill insects on contact. Demon WP Insecticide can be reapplied every 30 to 60 days depending on the targeted pests or the severity of the infestation.

Safety Information

Demon WP Insecticide is safe to use around children and pets when applied according to the label and mixing instructions. Allow treated areas to ventilate or dry before entering. Always wear the proper personal protective equipment (PPE) when mixing or applying Demon WP.

Special Considerations

Each packet contains 0.3 ounces of Demon WP Insecticide, which will create a 0.1% concentration when diluted with 1 gallon of water. Wettable Powders like Demon WP will leave a visible residue as the liquid spray dries.

AvailabilityIn Stores, Online
Restricted UseNo
Shipping Restrictions4 x 0.3 oz. Packets: AK, CA, CT, HI, IN, MI, NY, OR, RI, SC, VT, WA
BrandSYNGENTA
Keith's Pro Tips"For best results, clean the sprayer and screens with detergent and water before mixing Demon WP Insecticide. Since Demon is a wettable powder, prevent clogging of your sprayers by using strainers or screens finer than 50 mesh size and agitating the sprayer regularly during treatment so the product doesn't settle."
Product DrawbacksDemon WP Insecticide is not suitable for indoor broadcast treatments on flooring. Wettable Powders like Demon WP also leave a visible residue once the spray has dried.
Target PestsDemon WP Insecticide controls for the following: Ants, ants, Aphids, Assassin, Bees, Beetle, Billbugs, Boxelder, Bugs, California, Carpenter, Carpeter, Centipedes, Chiggers, Chinch, Cockroaches, Crickets, Earwigs, Elm, Fire, Firebrats, Fleas, Flies, Leaf, Millipedes, Mites, Mosquitoes, Oakworm, Scorpions, Silverfish, Sod, Sowbugs, Spiders, Termites, Ticks, Wasps, Webworms
Application EquipmentBackpack Sprayer, Gloves, Pump Sprayer, Respirator Mask, Spray Rig
Application MethodsBroadcast Spray, Crack & Crevice, Spot Treatment
Active IngredientCypermethrin - 40%
Product TypeInsecticide
FormulationWater-Soluble Powder
Application RateThe mix rate is determined by the type of insect being controlled. For most insects, mix 1 Demon WP Insecticide water soluble packet with 1 gallon of water. For more specific application rates please refer to the label.
Shelf LifeDemon WP Insecticide will last for up to 1 to 2 years when stored according to the product label. Store Demon WP Insecticide in the original foil packaging in a cool, dry storage area.
YieldFor perimeter treatment applications, 1 water soluble packet of Demon WP Insecticide will treat up to 1,000 square feet.
Use SitesIndoors, Outdoors
Time to KillDemon WP Insecticide kills targeted within a few minutes of coming in contact and the residual effects can last for up to 60 days depending on the type of insect and the severity of the infestation.
Comparable ProductsCyper WSP, Captan 50 WP
Incompatible Home SidingMetal
EPA Registration #100-1000
5/5
Based on 54 reviews
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80%
6/6/23
Tom McGahey
Verified Buyer
Good product
I have used this product many time and happy with the results. It will leave a very light tan residue when dry on a white surface. Fast service and shipping from Solutions Store.
100%
11/6/22
Reedith Darville
Verified Buyer
Thanks works great. Always recommend to people. Like that it kills all insects.
100%
7/1/22
Bob Ross
Verified Buyer
Works Great But.....
I've been using for years. Apply every 6-8 months and keeps the house pest free. I only wish it was colorless as the white residue doesn't go well with dark flooring. I have to use a damp sponge mop to go over after it dries which probably reduces it's effectiveness. Otherwise, great inexpensive produce.
80%
12/25/21
Mitch S.
Verified Buyer
Great
Why should i have to write this when i could have just wrote great product
100%
8/19/21
karl groweg
Verified Buyer
Tree Roach Killer
A very good insecticide for tree roaches or Palmetto bugs. I applied it on the outside brick walls and on the trees and bushes. The next day I counted 17 dead roaches along the garage wall. It claims to work for two months and it has so I am about to apply a second round. Solution had the best price.
100%
8/12/21
Jennifer Patton
Verified Buyer
This product is amazing. It is the only insecticide I use! Forget paying for expensive services. This is all you need!
100%
7/4/21
R Edwards
Verified Buyer
Great price. Fast delivery. 2 thumbs up!!
Demon is great for indoor use. Not so good for ants in your lawn. Ants return after one rain.
100%
4/13/21
marcus martinez
Verified Buyer
great product
effective and easy to use when used properly whether indoors or outdoors
100%
12/16/20
julie jenkins
Verified Buyer
Works great. Arrived on time. As described. Would recommend to others.
100%
9/22/20
Eddie Ogletree
Verified Buyer
Does the job with out a doubt. Dries without damaging perimeter. Recommend for outdoor use.
I highly recommend Demon for those who prefer to do their own monthly insecticide prevention. It has worked against spiders, scorpions and tarantulas.
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More Information
Restricted Use No
Shipping Restrictions AK, CA, CT, HI, IN, MI, NY, OR, RI, SC, VT, WA
Availability In Stores, Online
Signal Word WARNING
Keith's Pro Tip "For best results, clean the sprayer and screens with detergent and water before mixing Demon WP Insecticide. Since Demon is a wettable powder, prevent clogging of your sprayers by using strainers or screens finer than 50 mesh size and agitating the sprayer regularly during treatment so the product doesn't settle."
Target Pests Multi Ants, Aphids, Assassin Bugs, Bees, Boxelder Bugs, California Oakworms, Carpenter Ants, Carpenter Bees, Centipedes, Chiggers/Red Bugs, Chinch Bugs, Cockroaches, Crickets, Earwigs, Elm Leaf Beetles, Fire Ant Mounds, Firebrats, Fleas, Flies, Millipedes, Mites, Mosquitoes, Pillbugs, Scorpions, Silverfish, Sod Webworms, Sowbugs, Spiders, Termites, Ticks, Wasps
Time to Kill Demon WP Insecticide kills targeted within a few minutes of coming in contact and the residual effects can last for up to 60 days depending on the type of insect and the severity of the infestation.
Chemical Type Insecticide
Formulation Water-Soluble Powder
Application Methods Broadcast Spray, Crack & Crevice, Spot Treatment
Product Drawbacks Demon WP Insecticide is not suitable for indoor broadcast treatments on flooring. Wettable Powders like Demon WP also leave a visible residue once the spray has dried.
Active Ingredient Cypermethrin - 40%
Application Equipment Backpack Sprayer, Gloves, Pump Sprayer, Respirator Mask, Spray Rig
Mix Rate The mix rate is determined by the type of insect being controlled. For most insects, mix 1 Demon WP Insecticide water soluble packet with 1 gallon of water. For more specific application rates please refer to the label.
Low Use Rate 0.33 oz. per 800 sq. ft.
High Use Rate 33 oz. per 1,000 sq. ft.
Use Sites Indoors, Outdoors
Yield For perimeter treatment applications, 1 water soluble packet of Demon WP Insecticide will treat up to 1,000 square feet.
EPA Registration No. 100-1000
Shelf Life Demon WP Insecticide will last for up to 1 to 2 years when stored according to the product label. Store Demon WP Insecticide in the original foil packaging in a cool, dry storage area.
Comparable Products Cyper WSP, Captan 50 WP
Children or pets? No
Property Characteristics Food-Bearing Plants
Questions and Answers
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  1. Q:If you use it inside,do you shut the house up after you spray or before?
    12/21/23
    A:Not sure what exactly you are asking, but you do not have to open doors/windows before of after indoor application. It is recommended though to open doors after treatment so areas can be better ventilated. Exit area immediately and remain outside the treated area until sprays have dried.

    Amanda Chavez

    12/21/23
    Certified Buyer
  2. Q:If it dries on a counter top is it safe?
    11/13/23
    A:I would suggest that you not use on countertop!!! It's poison. You know that right?

    Eddie Ogletree

    11/13/23
    Certified Buyer
  3. Q:What is the best time of the day to spray outside and will extreme sunshine and heat affect the outcome? Also, can it be applied to carpet inside the home?
    7/16/23
    A:i apply early morning before the heat builds up. i also try to avoid days when sprinkler comes on or if rain chances are high for the day. i try to give the demon wp product a couple of hours or a day or two of "dry time" if bugs are around they have adequate time to knock themselves out. :-) i used this product for a number of years and simply love effective its been. finally i never spray or apply any pesticides inside the home 'cos we have pets and grandchildren. the product declaration says its safe but we chose not to use the product indoors.

    Rajendran Moodley

    7/16/23
    Certified Buyer
  4. Q:Can I use if it’s going to rain a little?
    6/19/23
    A:I try & avoid times when it's forecast for heavy rain like the next day or so after applying. I usually check the weather & try to hit a space where it's going to be dry for 2-3 days ideally. I don't apply during an actual rain either. That said, if it's dry the day you apply & it has at least 12 to 24 hours to set up before it rains, it should not really decrease the effectiveness. ...If it rains very very heavily after an application, I will usually try to re-apply pretty soon because in my opinion, heavy rains will wash some of it away over time. ...But like just a light or average rain a day or so after applying should not hurt anything. Sometimes where I live, it's hard to get 2 to 3 dry days in a row, so you just do the best you can. If it has about 12 dry hours after applying, it usually is fine in my experience. ...I hope this helps you.

    WILLARD LINDSEY

    6/19/23
    Certified Buyer
  5. Q:Is this safe for under the kitchen sink and around baseboards?
    7/30/22
    A:Yes It is. I usually don't spray indoors out of an overabundance of caution, but some years (Including this year!) we have worse Spider outbreaks than others. So I sprayed indoors in just those locations & around baseboards & in closets etc. ...I have noticed no ill effects from it. I just don't do this every year, or application, if it's not needed, but it's safe. No more Spiders though.

    WILLARD LINDSEY

    7/31/22
    Certified Buyer
  6. Q:Will demon kill black widows?
    6/15/22
    A:Though not directly stated on the product label, Demon WP Insecticide is labeled to kill spiders. For a product that is specifically labeled to control black widow spiders, we recommend Supreme IT Insecticide. https://www.solutionsstores.com/reclaim-it-insecticide

    Amanda Chavez

    6/16/22
    Certified Buyer
  7. Q:Do animals have to leave the house when applying?
    4/18/22
    A:You should really go by the manufacturers instructions and not by someone's comments on the internet. Having mentioned that, I believe the DemonWP is permethrin based and permethrin is toxic to cats so I would think you would not want a cat around while it's still wet.

    Ken Koellner

    4/18/22
    Certified Buyer
  8. Q:How long do I need to stay out after treatment?
    12/5/21
    A:I'm not clear about the question but if you mean do you have to stay outside where you have used the material, you do not have to stay there at all. If you have young children or pets that will be in that area I would suggest completely covering the holes into which you have poured the treatment, and then make sure that they cannot be opened by a child or pet - especially by a dog or cat that might want to dig up the freshly turned earth.

    Monica Beyer

    12/5/21
    Certified Buyer
  9. Q:Will Demon kill web worms?
    10/17/21
    A:Not familiar with web worms. sorry. Used it for Asian beetles on the house. Works good for that.

    Stan Dale

    10/19/21
    Certified Buyer
  10. Q:Where in a restaurant can Demon WP be used in a commercial restaurant?
    8/12/21
    A:Anywhere that will not come in contact with food or utensils.I spray walls on outside about 3 feet from ground and spray ground at least 6 feet around perimeter of building.

    steve scott scott

    8/12/21
    Certified Buyer
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