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MGK: Onslaught FastCap Spider & Scorpion Insecticide

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January 14, 2026

MGK OnSlaught FastCap bottle
IMAGE: MGK

Onslaught FastCap Spider & Scorpion Insecticide is a dual-active, synergized formula that delivers fast-acting and long-lasting residual control:

  • Synergized with piperonyl butoxide (PBO) to maximize effectiveness
  • Labeled for the control of more than 100 pest insects, including cockroaches, darkling beetles, flies and mosquitoes (including the Aedes species that may transmit Zika virus)
  • Microencapsulated residual insecticide features fast knockdown agent for enhanced control
  • Can be used in a wide range of areas including indoors and outdoors, delivering an easy, one-step approach to pest control
  • Available in 1-pint bottles, 1-gallon bottles and 30-gallon drums

About MGK

In 1902, Alexander McLaughlin went into the business of importing ground spices, plant leaves, barks, fruits and flowers for use in pharmaceuticals and food. Six years later, he incorporated the business with partners George King and John Gormley. The company, McLaughlin Gormley King (MGK), soon realized its product shipments containing flowers in the chrysanthemum family of plants were never infested with live insects.

Four generations of family leadership have guided MGK since its founding. In 1989, MGK became an affiliate of Sumitomo Chemical Co., a critical relationship to its long-term successes in chemistry, technology, sales and growth. As the MGK team notes, “advanced pest control methods that minimize environmental impact while meeting control requirements hold great promise for the future. And that is where MGK plans to be — at the forefront.”

MGK.com

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