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221L Insecticide Residual Aerosol

Usually Ships in 1-2 days
It's not enough to treat insect pests with a contact-kill insecticide. After all, the pests will continue to return since it doesn't contain a residual ingredient to prevent another infestation. PT 221L Insecticide Aerosol with the active ingredient Lamda Cyhalothrin is different as it leaves behind a lasting residual and controls pests long after it's been applied to an area. Whether it's ants or roaches, this aerosol insecticide continues to work and to provide excellent pest control indoors and outdoors.

Features and Specifications

Active Ingredient(s) Lamda Cyhalothrin - 0.05%
Pest Control ants, roaches, spiders, carpenter bees, silverifsh, crickets, ticks, wasps
Sale Prohibited NY, CA,
Shipping Rate Free
UPC 804338146733
EPA Registration 499-473

How 221L Insecticide Works

221L insecticide residual aerosol contains the synthetic active ingredient pyrethroid called lambda-cyhalothrin. Like other pyrethroids, this active ingredient targets the central nervous system of pest insects. It causes hyperexcitation and prevents the pests from grooming, feeding and performing other functions. Before long, the pests become paralyzed and die. Unlike other pyrethroids, lambda-cyhalothrin provides a residual effect and continues to control the pests after the ingredient has dried on the surface.

Where to Use 221L Insecticide

Use 221L Insecticide aerosol spray indoors and outdoors to eliminate and to control pest infestations. Because it's in spray form, it can be applied as a spot treatment or as a crack-and-crevice treatment to kill insects on the spot or deep in their hiding places. Apply it inside and outside of apartment buildings, homes and offices, including other common areas such as:

  • Food-processing facilities
  • Hotels
  • Nursing homes
  • Restaurants
  • Schools
  • Warehouses


Target Pests

221L insecticide eliminates many different insect pests, including resistant species such as bedbugs. It knocks down flying pests such as wasps and crawling pests such as ants. Use 221L to eliminate and to control:

  • Boxelder bugs
  • Carpenter ants
  • Earwigs
  • Flour beetles
  • Silverfish
  • Ticks
  • Wood borers


Reasons to Use 221L Insecticide Aerosol Spray

  • Kills numerous household and outdoor pests
  • Provides a long residual for effective pest control
  • Can be used in food-storage and processing areas
  • Effectively kills resistant pests such as bedbugs and termites
  • Safe around pets when applied as directed
  • For use as a spot or a crack-and-crevice treatment


Eliminate Household Pests With 221L Insecticide

221L Insecticide with the active ingredient lambda-cyhalothrin does what other insecticides fail to do: provide a residual. It keeps on working after it's been applied to the target area, preventing future pests from reinfesting indoor and outdoor spaces. The active ingredient provides quick knockdown and long-lasting control and is easy to apply thanks to its aerosol form factor. Whether it's above-ground termites or pantry pests, nothing keeps killing insects for longer than 221L residual aerosol insecticide.


It is a violation of Federal law to use this product in a manner inconsistent with its labeling. Do not apply this product in a way that will contact workers or other persons, either directly or through drift. Only protected handlers may be in the area during application. For any requirements specific to your State or Tribe, consult the agency responsible for pesticide regulations.


For additional information on this product please reference the CDMS label database listed below



Ask a Question
  • It says food storage areas, can I put it in a pantry and not worry about contamination or health problems? I live near the ocean. Is the product absorbed into spaghetti boxes, bags of beans, other items like that? Will the residue if touched have an adverse reaction to people? And if so or in general is there a lasting residue after use?

    Please refer to the manfacture website product label to answer your question