Bifen IT - Questions & Answers

Bifen IT can be reapplied every 30 days for most applications outdoors. Mix rates range from 0.18 to 1 fl oz per gallon of water per 1000 sq ft of area depending on the insects you are targeting. 

Repeat applications should only take place if there are signs of renewed insect activity and must not exceed one application per 7 days. 

View the full product label for more information for your specific treatment. 

While yes, insects can develop a resistance to the same active ingredients with the same modes of action, this usually takes years of exposure to that same chemical to develop a resistance. For a rotation insecticide with Bifen IT when targeting mosquitoes, Temprid FX would be recommended as this contains 2 active ingredients (beta Cyfluthin & Imidacloprid) to help prevent resistance.

View the Temprid FX product label for more information. 
 
For mosquitoes key is to apply to the underside of leaves on trees/bushes which is there the adults lay during the day, as well as shady areas.  You would not treat entire areas of the lawn that are in full sun as it is not habitable for them there.

View our Mosquito Treatment Guide for more information on successful treatment program. 
 
 

Bifen IT  is labeled for Indian Meal Moths, however, we do not have a product that is labeled to be sprayed in the actual fireplace. You may spray outside edges and surfaces of the fireplace but not inside or in the chimney/flute areas. 

We would recommend reviewing the Indian Meal Moth Treatment Guide for alternative product recommendations and more helpful tips.

It is advisable to wait at least 1-2 days after mowing to apply a product like Bifen IT, or any other chemical treatment application to your lawn, to avoid any unnecessary stress this may potentially cause to your freshly cut lawn.

While Bifen IT is labeled for mites it is not labeled specifically for rodent mites. The easiest method to control rodent mites that have entered your home is to physically remove them with a vacuum cleaner or wipe them up with a moist cloth. Mites are not automatically killed by a vacuum cleaner so freeze the bag to prevent the mites from crawling back out.

 
Locating the source and eliminating the hosts and nests is important to prevent further problems with these mites. Nests are usually located in attics, basements, or inside walls. If necessary, trap them with kill traps or glue boards. Spray the dead rat and its nest with a disinfectant. Removing the mite source (dead mice, rats, and abandoned nests) is very important. Unless you remove their source, rat mites will continue to seek human host infesting your house.

Bifen IT is labeled for flies, yellow jackets and wasps when applied per the product label rates. This is not a knockdown spray but will leave a residual of 21-30 days. Retreat as necessary if signs of renewed activity exist.

You may want to consider our Wasp and Hornet Kit which contains the residual insecticide Cyzmic CS, plus Wasp-X that is a contact kill aerosol to spray wasps and nest directly. 

Bifen I/T can be used for mound drench application on fire ant colonies in the yard as well as broadcast spraying over the surfaces of the lawn.

Per the ant control and mound drench instructions from the Bifen I/T Product Label:
The best control will be achieved by using broadcast treatments in combination with mound drenches. This will control present colonies along with foraging workers and newly mated flyin queens. It is critical either to use high volume treatments or to irrigate prior to application if the soil is dry. Apply 1 fl. oz. per 1,000 square feet when using broadcast treatments. For mound drenches, dilute 1 teaspoon of Bifen I/T per gallon of water and use 1 to 2 gallons of finished dilution using sufficient force to penetrate the top and allow dilution to flood ant 39 channels. Treat a four-foot diameter around each ant mound. 

Application should be made in late evening or early morning when it is cooler (65

You will need to wait 24 hours after/before mowing to apply Bifen IT

Bifen IT is not labeled for treatment of tapeworms. 

Bifen IT is labeled to be used in poultry houses and chicken pens so it should not harm your chickens even if they eat the grass or bugs.  The small amount of active ingredient is only enough to kill a small insect.  You must make sure your chickens are out of the area while you apply Bifen and then they can return to the area as soon as it is dry. Keep in mind that this product cannot be broadcasted where chickens wil graze. 

Bifen IT is labeled my the manufacturer for indoor use. Bifen IT is labeled to kill cockroaches that come in contact with treated surfaces. If you have a roach infestation we advice you use one of our Roach Control Kits. 

As long as you keep chickens out of the area while applying Bifen I/T and until it has time to completely dry it should be safe for your chickens to return to that area. It also will not harm the chickens if they eat an insect that has died from the Bifen I/T treatment.

Bifen IT can be used on laminated, painted and stained surfaces that would not normally be stained by water. Always mix per the product label instructions at the advised product label rate.

A small test spot application can always be done prior to spraying if staining is a concern. 

Yes, Bifen IT is labeled to control stinkbugs. The rate is 1 oz per gallon of water per 1,000 sq ft monthly to listed exterior areas and quarterly to interior crevices. Please refer to the product label for full application instructions. For more information on treating stinkbugs, check out our article here.