Onslaught FASTCAP - Pint


Sale price$71.41


Professionals understand how to kill spiders and scorpions by using a powerful insecticide. Onslaught FastCap provides the most effective results when combating spiders, scorpions and other nuisance pests. It works both indoors and outdoors to treat pests where they live and breed. It contains three active ingredients to deliver quick knockdown and long-lasting pest control in both homes and businesses.

How Onslaught FastCap Works

Onslaught FastCap insecticide contains three ingredients for better insect control: prallethrin, esfenvalerate and piperonyl butoxide. The first two ingredients are synthetic pyrethroids. These chemicals work on contact and through ingestion, targeting the pests' central nervous system and causing paralysis. Over time, the insects grow weaker and eventually die. Piperonyl butoxide is a synergist, meaning it breaks down slower and enhances the effectiveness of the active ingredients. It makes them stronger and kills the insects within minutes. It also offers residual control by adhering to surfaces.

Where to Use Onslaught FastCap Insecticide

Use Onslaught FastCap indoors and outdoors to control spiders and other pests. Spray this insecticide in restaurants and other businesses to prevent ant and roach infestations. It can even be used to control bed bugs in homes and hotels, as well as fleas and ticks in lawns and other landscaped areas. Combine it in a tank with water, and use a sprayer to knock down wasp nests on patios and beneath awnings. It works great at killing insects that hide in and around cracks and crevices, crawl spaces and plumbing. Some other places to use Onslaught FastCap include:

  • Homes
  • Offices
  • Warehouses
  • Motels

Target Pests

Though Onslaught FastCap is labeled as a spider and scorpion insecticide, it targets many more insect pests. In fact, it kills resistant insects like German cockroaches and bed bugs. It eliminates carpenter ant infestations and knocks down gnats, houseflies and other nuisance insects. It's the ideal insecticide for killing brown recluse spiders and other spiders inside garages, attics and other spaces. Some primary target pests include:

  • Stinkbugs
  • Fleas
  • Boxelder bugs
  • Hornets
  • Termites
  • Mosquitoes

Onslaught FastCap is also effective at killing various pantry pests in kitchens and restaurants, such as saw-tooth grain beetles and Indian meal moths. It also eliminates flour beetles and rice weevils, keeping infestations out of food-handling areas.

Why Use Onslaught FastCap to Kill Spiders?

Brown recluse spiders and other species cause harm to people. FastCap knocks them down on contact and continues to provide residual spider control long after it's sprayed in the area. It also kills other harmful insects like hornets, wasps and yellow jackets, including disease-carrying pests such as ticks. Some reasons to use Onslaught FastCap include:

  • Three active ingredients for maximum pest control
  • Useful as a spot and crack-and-crevice treatment
  • Works both indoors and outdoors
  • Breaks down slowly for long-term pest prevention

Onslaught FastCap Insecticide Provides Maximum Results

For quick knockdown of spiders and other insects, use Onslaught FastCap. It works quickly thanks to three active ingredients that provide long-term results when used as directed. This insecticide degrades slowly on surfaces and continues to kill pest insects for much longer than other contact pesticides.

Manufacturer MGK®
Primary Pest Spiders
Utility  Concentrated Liquid
Active Ingredient Esfenvalerate, Prallethrin, Piperonyl Butoxide, Other Ingredients
Composition 6.40%, 1.60%, 8.00%, 84.00%
Container Size 1 pint
Case Amount 6x1 gallon
Application Amount See label for details.


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