CSI Martin's Bifen 7.9 Home & Yard Insecticide Concentrate, 4-fl oz bottle

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About This Item

Details

  • Made in the USA!
  • Features 7.9% bifenthrin to provide effective control of over 75 insects and pests.
  • Features a water-based formulation.
  • Effective against flies, ticks, ants, bees, beetles, boxelder bugs, carpet beetles, centipedes, clothes moths, cockroaches, crickets, earwigs, firebats, gnats, midges, millipedes, pillbugs, silverfish, sowbugs, spiders, stinkbugs, termites, wasps, and scorpions.
  • Features a long-lasting residual that’s safe for use around children and pets when used as directed.

Ingredients

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Questions & Answers

17 Customer Questions

Will it kill roaches in the house

Answer by Chewy • Feb 03, 2022
This insecticide can be used to kill roaches inside the house.

Is this product safe for lawns and outdoor pets (cats and dogs)

Answer by Chewy • Mar 30, 2023
This concentrate is safe to use on lawns. When used as directed, it can be safely used around children and pets.

Does this work on fire ants and chiggers?

Answer by Chewy • Mar 16, 2022
Bifen I/T will work on both fire ants and chiggers.

How long is it effective on fly's another was of saying if I spray it in my barn how many days will it kill fly's that come in contact with it or is it just effective at time of spraying

Answer by Chewy • Mar 18, 2022
This product leaves a long-lasting residual that’s odorless and non-staining and dries clear. Repeat application should only take place if there are signs of renewed insect activity and must not exceed one application per 7 days.
Reviews
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4.7
Rated 4.7 out of 5 stars
70 Ratings
Terms & Conditions

23 Customer Reviews

Rated 5 out of 5 stars
By Michelle on Oct 24, 2025

Helped with Termite problem

I had a termite problem and needed this to treat it. After doing some research, this seemed like the real stuff that professionals would use. It definitely did the

I had a termite problem and needed this to treat it. After doing some research, this seemed like the real stuff that professionals would use. It definitely did the job for spraying surfaces and walls. Killed lots of termites. And I’m glad to see it’s safe to use around humans and pets. I have 2 cats, so that was something important to consider.

Rated 5 out of 5 stars
By Beth on Jul 20, 2025

Works great for gnats and mosquitos

Start early in the season for best results. Our yard was invested with tiger mosquitos and biting gnats. Bifen killed both pests. May have to spray every few weeks

Start early in the season for best results. Our yard was invested with tiger mosquitos and biting gnats. Bifen killed both pests. May have to spray every few weeks in the bringing or if you have a lot of rain. I was worried this solution would keep pollinators away but we’ve had butterflies, bees of all kinds and lots of birds.

Rated 5 out of 5 stars
By Kelly on Jul 22, 2025

Great Value for Very Effective Spider Spray!

Previously I had purchased this same product in a smaller quantity for a lot more at my local farm supply store. I appreciated the same quality and better value

Previously I had purchased this same product in a smaller quantity for a lot more at my local farm supply store. I appreciated the same quality and better value to effectively get rid of spiders around our home.

Rated 5 out of 5 stars
By Patty on Nov 6, 2025

Efficiency

It works really great on eradicating the fire ants on our property.

It works really great on eradicating the fire ants on our property.

Rated 5 out of 5 stars
By Chase on May 16, 2025

It works.

I’ve used this for years after a guy I work with that has a lot of farm animals recommended it. Spray ants and the next day they’re gone! I soak foundation and yard

I’ve used this for years after a guy I work with that has a lot of farm animals recommended it. Spray ants and the next day they’re gone! I soak foundation and yard once a month and we have no problems with pests in the house.

Rated 5 out of 5 stars
By Molly on Mar 26, 2025

Fire ants killer

I was told by a grounds worker that this is the best stuff to fight fire ants with. The directions are confusing but I followed the ground worker’s instructions

I was told by a grounds worker that this is the best stuff to fight fire ants with. The directions are confusing but I followed the ground worker’s instructions and destroyed 4 mounds in the garden I’m working on. I will be buying this again and recommending it to others!

Rated 5 out of 5 stars
By Lois on Sep 4, 2025

Price

Good for pets and people

Good for pets and people

Rated 5 out of 5 stars
By Cynthia on Oct 17, 2024

Florida is a great test spot for this

In Florida, if it crawls, flies or burrows through the soil, we've got it. Termites, fire ants and mosquitoes are at the top of a lengthy list. We've put down

In Florida, if it crawls, flies or burrows through the soil, we've got it. Termites, fire ants and mosquitoes are at the top of a lengthy list. We've put down all sorts of different types of pesticide, and although some worked, they didn't irradicate the problem. We mix Bifen with water in a pump sprayer and spray the perimeter. No fire ants, no mosquitos, mole crickets or termites either. Several of our other neighbors have had to get their houses tented to eliminate the termites. Typically, when this happens, it will kill the majority, but some of them will just move off to an adjacent property. We've had our neighbor's exterminators come and ask to inspect our property (hoping to get a new job), but they can't find any termites! This is a lot less expensive than tenting a house. I'm sold on it!

Rated 5 out of 5 stars
By Kathleen on May 10, 2025

Recommended by my neighbor

Good product and very easy to apply to my yard.

Good product and very easy to apply to my yard.

Rated 5 out of 5 stars
By Joan on Apr 30, 2025

Great service and very nice people on phone.

Helps get rid of of clover mites

Helps get rid of of clover mites