Onslaught® FastCap Spider & Scorpion Insecticide

Use Sites

Animal Premise, Food-Handling, Indoor, Outdoor, Perimeter

View full use sites: Download Label



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Onslaught FastCap Microencapsulated Insecticide provides fast-acting and long-lasting residual control of spiders, scorpions, fleas, mosquitoes and a broad spectrum of other residential and commercial pests. Reference the product label for the full list of pests killed or controlled.

Primary Uses

  • Ants
  • Bed Bugs
  • Fabric Pests
  • Fleas
  • Occasional Invaders
  • Stored Product Pests
  • Ticks
  • Wasps & Yellowjackets

View All Pests

Features & Benefits
  • Kills a broad spectrum of pests (including spiders, scorpions, fleas and mosquitoes)
  • Kills mosquitoes, including the Aedes mosquito that may carry and transmit Zika virus
  • Quick kill
  • Combines active ingredient esfenvalerate, knockdown agent prallethrin with synergist piperonyl butoxide (PBO) for enhanced control
  • For use indoors and outdoors, including indoor broadcast treatment option
  • For use in food and non-food areas of commercial structures
  • For use in and around livestock facilities, on turf, ornamentals and landscapes
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Onslaught FastCap Documentation

Fast answer for scorpions and spiders. Aaron Eubank of Titan Pest Control and MGK team up to tackle scorpions and spiders.

“I’ve been in the business for 18 years, and we’ve tried a lot of products on scorpions. This one does a great job. I was surprised, because nothing had been that effective before.” – Aaron Eubank, Titan Pest Control, Arizona

Onslaught FastCap FAQs

  • 1 pint bottle
  • 1 gallon bottle
  • 30 gallon drum

Please contact your distributor for availability.