Bifen IT is a professional-strength insecticide and termiticide that provides long-lasting control of over 75 pests with a low-odor, non-staining formula that can be used both indoors and outdoors, including on lawns and ornamentals. 

How Bifen IT Works

Bifen IT Insecticide contains 7.9% bifenthrin Talstar P, a synthetic pyrethroid known for its long-lasting residual. It doesn't kill on contact. Instead, insects walk through treated areas and absorb the active ingredient. Once exposed, pests experience nervous system disruption and die shortly after.

This delayed reaction allows insects to return to nests or harborage sites before dying, helping to spread the treatment further. Bifen IT also works as a repellent, especially useful for social insects such as ants and roaches, by discouraging new pests from following scent trails or settling in treated spaces.

Key Features of Bifen IT

• Controls over 75 listed pests, including mosquitoes, ticks, ants, and spiders.
• Offers long-lasting protection for up to three months outdoors.
• Virtually odorless and won’t stain surfaces.
• Cost-efficient with the same active ingredient and effectiveness as Talstar P.
• Can be used inside homes and outside on lawns, trees, and ornamentals.
• Approved for use in food and feed handling areas (non-contact surfaces only).
• Compatible with insect growth regulators (IGRs) for enhanced control.
• Pet-safe once dry, making it great for families and pet owners.
• Ideal for DIY pest control and professional treatments alike.

Target Pests Controlled

Bifen IT is highly effective against a wide range of insects, including:

• Ants, fleas, ticks, mosquitoes, spiders (including black widows), roaches, and crickets.
• Lawn and landscape pests like chinch bugs, armyworms, whiteflies, and aphids.
• Wood-destroying insects like powder post beetles.
• Seasonal invaders or overwintering pests such as stink bugs, pillbugs, centipedes, and millipedes.
• Stinging insects like wasps, yellow jackets, and hornets.

A full list of target pests is available on the product label or see below.

Where to Use Bifen IT

Bifen IT Use Areas:

• Residential homes, garages, attics, basements, and crawl spaces.
• Lawns, flower beds, shrubs, ornamental trees, and gardens (non-edible plants only).
• Restaurants, food warehouses, bakeries, bottling plants, and other commercial kitchens (non-contact areas).
• Schools, offices, hospitals, hotels, daycares, and nursing homes.
• Livestock and poultry housing facilities (non-edible use areas).
• Recreational fields, parks, landscaping areas, and shopping centers.
• Transportation sites like buses, aircraft cargo holds, and trains.

Application Guidelines for Bifen IT

Indoor Applications:

Mix between 0.33 and 1 ounce of Bifen IT per gallon of water. Apply Bifen IT using a low-pressure sprayer into cracks, crevices, behind appliances, under sinks, and around plumbing or other areas prone to pest infestations. Do not use it as a broadcast spray indoors. Limit reapplication to once per week and only if signs of pest activity return. It may be applied as foam for treating wall voids or for visible application in sensitive areas. Always read the label before use and follow all instructions.

*Bifen IT is NOT labeled for control of bed bugs in residential or commercial areas except for in livestock and poultry housing structures.

Outdoor Applications:

Mix between 0.5 and 1 ounce of Bifen IT per gallon of water. Spray a band around the base of your home or structure, going about 3 feet up the foundation and 2 feet out onto the ground. Also treat entry points like doors, windows, vents, and utility openings. Reapply every 2 to 3 months for general protection. Always read the label before use and follow all instructions.

Mosquito Control: Spray foliage, shaded areas, and resting spots using a dilution of 0.33 to 1 ounce per gallon of water. See our ‘How to Get Rid of Mosquitoes’ guide for mosquito treatments.

Lawn and Landscape Use: Use a hose-end or pump sprayer to apply Bifen IT across lawns, bushes, and ornamental plants. For chinch bugs or other turf pests, water the area lightly before application to help the product reach deep into the thatch. Spraying early in the morning or late afternoon is ideal to avoid high heat.

How Much Bifen IT to Use

The amount of Bifen IT you use depends on your pest problem:

• Use 0.33 ounces per gallon of water for prevention or light infestations.
• Use 0.5 ounces per gallon for general indoor and outdoor use.
• Use 1.0 ounce per gallon for severe infestations or longer-lasting protection.

Each gallon of diluted spray typically treats around 1,000 square feet.

Yield of a Bottle of Bifen IT

• 4-ounce bottle makes between 4 and 8 gallons of spray.
• 1-pint bottle (16 oz.) makes 16 to 32 gallons.
• 1-quart bottle (32 oz.) makes 32 to 96 gallons.
• ¾-gallon bottle (96 oz.) makes 96 to 192 gallons.
• 1-gallon bottle (128 oz.) makes 128 to 384 gallons.

Tips for Maximum Effectiveness

• Let surfaces dry completely (about 30 minutes) before allowing children or pets back into the area.
• Avoid spraying before rain or plant watering, and wait 24 hours after application if possible.
• Store the concentrate in a cool, dry place away from sunlight. Shelf life is around 3 to 5 years.
• Shake the bottle well before each use if separation has occurred.
• Combine with an insect growth regulator like NyGuard IGR for improved control of pests such as fleas and roaches.
• Reapply Bifen IT only when necessary or as directed by the label. Overuse doesn’t mean better results.
• Do not apply on food contact surfaces or edible plants.
• Rotate products as part of an integrated pest management strategy to reduce resistance risk.

Why Choose Bifen IT?

Bifen IT delivers professional results for both everyday pest prevention and serious infestations. It’s trusted by pest control pros, yet easy to use. Whether you're dealing with fleas in your yard or mosquitoes on your patio, Bifen IT offers long-term peace of mind, without the high cost.

Compare to: Talstar P (formerly Talstar One) – Bifen IT contains the same active ingredient and offers the same level of protection at an affordable price.

Bifen IT Target Insects:

Adelgids, American dog ticks, annual bluegrass weevils, ants, aphids, armyworms, bagworms, Banks grass mites, bed bugs (not in residential areas), bees, beet armyworms, beetles, billbugs, biting flies, black turfgrass ataenius, black vine weevils, boxelder bugs, broad mites, brown soft scales, budworms, California red scale, centipedes, carpet beetles, carpenter ants, chiggers, chinch bugs, cicadas, citrus thrips, clothes moths, clover mites, cockroaches, crane flies, crickets, cutworms, deer ticks, Diaprepes, dichondra flea beetles, earwigs, elm leaf beetles, European red mites, fall webworms, filth-breeding flies, firebrats, fleas, flea beetles, flies, fungus gnats, gnats, grasshoppers, gypsy moth caterpillars, hide beetles, hornets, imported fire ants, Japanese beetles, lace bugs, leaf-feeding caterpillars, leafhoppers, leafminers, leafrollers, litter beetles, mealybugs, midges, millipedes, mites, mole crickets, mosquitoes, moths, orchid weevils, pecan leaf scorch mite, pillbugs, pine needle scales, pine shoot beetles, plant bugs, psyllids, roaches, San Jose scales, scorpions, silverfish, sod webworms, sow bugs, spiders (including black widow spiders), spider mites, spittlebugs, springtails, stink bugs, subterranean termites (genera Reticulitermes, Zootermopsis, Coptotermes, and Heterotermes), tent caterpillars, thrips, ticks, tip moths, treehoppers, twig borers, wasps, weevils, whiteflies, wood-infesting beetles (including but not limited to old house borers and powder post beetles), yellow jackets.