Demon WP - 1 lb. Jar

Item# L0034
Regular price: $72.95
Sale price: $66.90, 6/$365.40
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Product Description


PDF Product Label / PDF Material Safety Data Sheet (MSDS)

Demon WP Insecticide

Demon WP along with Cyper WP and Cynoff WP are considered long lasting residual insecticides, lasting up to 3 months. Demon WP is an odorless product and can be used indoors as well as outdoors. Due to the contain of the material it is recommended that the mixed product is shaken often as it is being sprayed. Be extra careful when spraying Demon WP around dark furniture and surface for it will leave a stain. Demon WP uses a knock down method to control pest, meaning the minute the pest comes into contact with Demon WP it will die. When using Demon WP we recommend that a sprayer like Chaplin 1 Gallon is used to mix and spray the product.

Active Ingredient: Cypermethrin1: a-cyano-(3-phenoxyphenyl) methyl-cis,trans-3-(2,2-dichloroethenyl)-2,2- dimethylcyclopropanecarboxylate -40.0%

Size: 1 lb. Jar

Yield and Mixing: One scoop (9.5g) mixed with 1 gallon of water covers a 2,000 to 2,500 sq.ft. home.

Target Pest: Ants, Aphidsc, Assassin Bugs, Boxelder Bugs, California Oakworm, Centipedes, Chiggers, Chinch Bugs, Cockroaches, Crickets, Earwigs, Elm Leaf Beetlec, Firebrats, Fleas, Flies, Millipedes, Mites, Mosquitoes, Pillbugs, Silverfish, Sowbugs, Termitese, Bees, Carpenter Ants, Carpenter Bees, Fire Ants, Scorpions, Sod Webworms, Spiders, Ticks, Wasps

Registered States: AL, AK, AZ, AR, CA, CO, CT, DE, DC, FL, GA, HI, ID, IL, IN, IA, KS, KY, LA, ME, MH, MD, MA, MI, MN, MS, MO, MT, NE, NV, NH, NJ, NM, NC, ND, OH, OK, OR, PA, RI, SD, TN, TX, UT, VT, VA, WA, WV, WI, WY

IMPORTANT NOTE: Once the Demon WP is mixed with water it MUST be used within 24 hours otherwise it will neutralize itself and not work at all.

Advantages of Demon WP Insecticide

  • Quick knockdown and long-lasting - 90+ day residual
  • Virtually odorless, low vapor pressure
  • Advanced pyrethroid chemistry
  • Can be used inside and out
  • Controls ants, roaches, spiders and most other pests
  • No staining (indoors)
  • 1 gallon of finished DEMON WP solution fully treats a 2,000 to 2,500 sq. foot home



Wettable Powder low odor, long residual insecticide. 4 water-soluble packets per envelope-each envelope yields 2-4 gallons. Long term residual-2-3 months, and is odorless. A gallon usually completely covers a 2000-2500 sq. foot home. It will not stain or cause damage to any painted or varnished surface, plastic, fabric when water applied alone causes no damage.

For use as a general surface, crack and crevice and/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 with Demon WP:

Permitted areas of use in nonfood/nonfeed areas include, but are not limited to, aircraft (cargo and non-cabin areas only), apartment buildings, boiler rooms, buses, closets, correctional facilities, decks, entries, factories, fencing, floor drains (that lead to sewers), food granaries, food grain mills, food manufacturing, processing and serving establishments; furniture, garages, garbage rooms, greenhouses (non-commercial), hospitals (non-patient areas), hotels and motels, houses, industrial buildings, laboratories, livestock/poultry housing, landscape vegetation, locker rooms, machine rooms, mausoleums, mobile homes, mop closets, mulch, nursing homes, offices, patios, pet kennels,porches, railcars, restaurants, storage rooms, schools, sewers (dry), stores, trailers, trees, trucks, utility passages, vessels, vestibules, warehouses, wineries and yards.

Repeat treatments as necessary, but not more than once every 7 days.

For Use in Food Handling Establishments (For Use in Non-Food Areas Only) with Demon WP:

Demon WP may be used as a general surface, crack and crevice and/or spot treatment in the non-food areas of food handling establishments. Examples of non-food areas include garbage rooms, lavatories, floor drains (to sewers), entries and vestibules, offices, locker rooms, machine rooms, boiler rooms, garages, mop closets, and storage (after canning or bottling).

Do not use Demon WP in food areas of food handling establishments, restaurants or other areas where food is commercially prepared, processed or served. Food areas include areas for receiving, storage, packing (canning, bottling, wrapping, boxing), preparing, edible waste storage and enclosed processing systems (mills, dairies, edible oils, syrups). Serving areas (when food is exposed and facility is in operation) also would be considered a food area.

For Use in Residential Food Areas with Demon WP:

In the home, all food processing surfaces and utensils should be covered during treatment or thoroughly washed before use. Exposed food should be covered or removed.

Application Equipment Preparation For best results, thoroughly wash out sprayer and screens with water and detergent before using Demon WP. To avoid sprayer clogging, do not use strainers or screens finer than 50 mesh size.

Mixing Procedures

Demon WP must be diluted with water for application using hand-held or power-operated application equipment. For best results, dilution should be achieved using the following steps:

  1. Fill applicator tank 1/2 with water.
  2. Add desired amount of Demon WP.
  3. Close application equipment and agitate, stir or shake applicator tank.
  4. Finish filling applicator tank and agitate again before use to ensure satisfactory suspension.


  • Shake or re-agitate application equipment before use if application is interrupted.
  • Mix only amount of application volume required for each use.
  • Do not store dilution in application equipment overnight.

Tank Mixing

Demon WP 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 on the label of these products.



Demon WP may be used as a crack and crevice and/or spot treatment for indoor surfaces use.

Cockroaches, Spiders, Crickets, Scorpions, Silverfish, Ticks, and Firebrats Treatment with Demon WP:

Apply Demon WP 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, furniture, 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 Surfaces Use.

Ants Treatment with Demon WP:

Apply Demon WP to any trails, around doors and windows, and similar areas where ants (including carpenter ants) may be found. Where ants are trailing inside, apply as a residual surface treatment to active areas such as baseboards, corners, around pipes, in and behind cabinets, behind and under refrigerators, sinks, furnaces and stoves, cracks and crevices. When combining baits and residual surface insecticides, apply surface insecticides in cracks and crevices, along baseboards, and infested surfaces and outside barrier treatments. Apply perimeter barrier treatments and treat nest to prevent infestation as described in Outdoor Surfaces Use.

Assassin Bugs, Boxelder Bugs, Sowbugs, Pillbugs, Millipedes, Elm Leaf Beetle, and Centipedes Treatment with Demon WP:

Apply Demon WP around doors and windows and similar areas where these, or similar perimeter pests, may be found or where they may enter premises. Apply Demon WP to baseboards, storage areas, and other locations. Apply perimeter barrier treatments to prevent infestation as described in Outdoor Surfaces Use.


Apply Demon WP 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.

Carpenter Ants Treatment with Demon WP:

Apply Demon WP as a coarse wet spray treatment, but avoid runoff around doors, door frames, windows and similar areas where these ants enter premises or hide.

Fire Ants (Mounds) Treatment with Demon WP:

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.

Bees, Flies, Mosquitoes, and Wasps Treatment with Demon WP:

Apply directly to walls, window screens, and other exterior resting areas as a residual surface treatment. Use caution when treating nests of stinging insects as Demon WP does not provide instant knockdown.  Protective equipment for the applicator may be required. For best results, treat bee, wasp and hornet nests late in the day when most insects will be present. Allow 2-3 days for colony to die.

For mosquito control, apply as a general structural perimeter spray to landscape plantings, turf, and building foundations to control mosquitoes. Yards or other frequented areas enclosed by landscaping can benefit from the creation of a mosquito barrier to reduce invading mosquitoes by the treatment of perimeter vegetation. For best results, apply Demon WP at recommended rates in 2-5 gallons of water per 1,000 sq. ft. Higher volumes applied result in better coverage and, as a rule, will improve control. Application to vegetation away from structures may require additional applicator certification, e.g. in turf or ornamental categories. Consult your state regulatory agency for requirements. Not for use in wide area mosquito abatement programs.

Fleas and Ticks Treatment with Demon WP:

To control nuisance fleas and ticks (e.g. dog ticks) apply to yards, runs, and other outside areas where pets may frequent. To control ticks, apply using a coarse fan spray to vegetation brush, branches, rock walls, and other areas near habitation where ticks may harbor or frequent. Treat entire area rather than making spot treatments, and retreat as necessary to maintain control. Do not apply Demon WP to pasture or cropland, and do not allow animals and people access to treated areas until the deposit has dried. Applications can begin in the spring and can continue until frost to control both larvae and adult ticks.

Cluster Flies Treatment with Demon WP:

Make exterior treatments in late summer or early fall before flies are observed alighting on surfaces. Apply Demon WP thoroughly on siding, under eaves, and around windows and doors, paying particular attention to south-facing surfaces. Apply Demon WP just enough dilution to adequately cover the area without excessive dripping or runoff. Heavy precipitation prior to frost may require re-treatments to maintain protection.

Scorpions Treatment with Demon WP:

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.

Sod Webworms Treatment with Demon WP:

Apply Demon WP as a spot treatment when pests first appear (do not apply as a broadcast spray). Delay watering or mowing the treated area for 12-24 hours after treatment. Use 1-5 gallons of solution per 800-1,600 sq. ft. when making application. Retreat when needed but not more than every two weeks.


Applying a continual band of insecticide around a building foundation and around windows, doors, service line entrances, eaves, vents, and other areas can greatly reduce the potential for entry by crawling pests. To facilitate application, remove debris and leaf litter from next to the foundation, trim vegetation and branches that touch the foundation, and move or rake back rocks, deep mulch, or other potential pest harborage next to the foundation. To help prevent infestation of buildings, apply as a band to 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 band area, using 1-5 gallons of treatment solution applied to 800-1,600 sq. ft.

Amount of concentrate is dependent upon pest species (see pest table and comments), infestation levels, and service interval desired.

Termites above Ground Treatment with Demon WP:

For control of termites, subterranean aerial colonies, Formosan aerial colonies or drywood termites in localized areas of infested wood in structures, apply a 0.1% solution to voids and galleries in damaged wood and in spaces between wooden members of a structure and between wood and foundations where wood is vulnerable. Application may be made to inaccessible areas by drilling, and then injecting the emulsion with a crack and crevice injector into the damaged wood or void spaces. Application to attics, crawl spaces, unfinished basements, or man-made voids may be made with a coarse fan spray of 0.1% solution to control workers and winged reproductive forms of termites in mud shelter tubes. This type of application is not intended to be a substitute for soil treatment for extensive infestation of drywood termites or other wood-infesting insects. This treatment is intended to kill localized infestations of workers and winged reproductive forms of termites.

For termites active inside trees, utility poles and/or fence posts, drill to find the interior infested cavity and inject 0.1% solution using treatment tool with a splash back guard.

Termite carton nests in trees or building voids may be injected with 0.25-0.50% solution using a pointed injection tool. Multiple injection points to varying depths may be necessary. It is desirable to physically remove carton nest material from building voids when such nests are found. For enhanced penetration of unfinished wood or other porous materials, utilize the emulsifiable concentrate version of Demon Max.

Please refer to and follow the directions on the Demon WP product label.

DIY Pest Control Product sells professional pest control products that are not available at local hardware stores.

Not all professional pest control products can be sold to every state: it must be a registered product in the respective states. DIY Pest Control Product will not sell any products or kits that contain restricted pesticide to such states as NY.