Bifen IT - Questions & Answers

Unfortunately, we do not recommend Bifen IT in a pressure washer application. We recommend using it either in a hand pump sprayer, backpack sprayer, or hose end sprayer for a lawn application. 

Bifen IT could harm lightning bugs/fireflies if they land on a treated surface long enough to receive a lethal dosage.

Bifen IT and Demand CS have very similar active ingredients, so it would not be of any benefit to mix these two products together. If you would like to tell us more about what pest you are treating and where, then we are happy to give you further advice on your treatment.

Yes, Bifen IT can be tank mixed with Pivot IGR in the same hand pump sprayer. Follow the mix rate instructions on both product labels for the target pest you are treating. 

Bifen IT cannot be used on areas that will be used for grazing by animals. We do carry other products that can be applied for insect control safely on livestock/livestock areas including Hi-Yield Lawn, Garden, Pet and Livestock Insect Control.

Bifen IT cannot be used a ULV or thermal fogging machine. You can use it in a handheld or backpack sprayer or a mist blower such as the Solo 451.

Yes, Bifen IT is labeled for roaches and will kill them. This product is not recommended if you have an active infestation of roaches. If you see an occasional roach, this can be used indoors and outdoors for control. The mixing ratio is 1 fl oz per gallon of water.

Also, please check out our Roach Guide for tips on how to treat and prevent roaches.

Yes, Bifen IT can be used for flies.  You may want to take a look at our Fly Control Guide for more information on implementing a successful treatment program.  

You can mix Bifen IT with an herbicide as long as there are no restrictions on the label for the other product that you are using. We recommend performing a small jar test for compatibility any time you are using two new products together for the first time. Be mindful that you are only applying your herbicide in the correct areas.

The shelf life for Bifen IT is 3-5 years from the date of purchase if stored at room temperature. 

For most pests, you will use 1 oz. of Bifen IT per gallon of water to cover 1,000 sq ft.  Please refer to the product label for complete application instructions. 

Bifen IT is safe around pools when used as directed.  Once dry rain will not resconstitute it so there is no concern with runoff. 

We recommend that you either wait at least one year before planting edibles where Bifen IT has been sprayed or that you excavate the soil in the area you want to plant. You can also create raised garden beds where you would be bringing in fresh soil media.

When using Bifen IT for ticks, there can be several variables. How long it takes the ticks to die after they come into contact with a treated area will depend on a number of factors, such as the age of the tick as well as how long they stayed in contact with the treated area, how long it has been since the area was treated, and the concentration that was used to treat the area. Typically it can take anywhere from a couple of hours to a day or so for them to die. It can take several weeks for you to stop seeing ticks completely because ticks like to stay hidden, which also means they could be staying away from treated areas. We recommend doing follow up treatments every two weeks at the highest usage rate of 1 oz of product per gallon of water until you do not see any ticks.

While you could tank mix the two, the Mosquito Barrier is going to work against the effectiveness of the Bifen I/T for probably at least the first week or two. You are spraying Bifen on surfaces moquitoes would land on and harbor in so that when they touch the treated surface they pick it up on their bodies and die from it. If you are spraying Mosquito Barrier you are using it to repel the mosquitoes away from areas you dont want them or are trying to keep them from harboring. So essentially by mixing the two together, you are repelling the mosquitoes away from the Bifen I/T so it would not affect them. Outside of an initial contact kill the mosquito barrier isn't going to provide killing action for you long term, only repellency. Bifen is actually the better product to use on a consistent basis in main target areas on the property where mosquitoes would be found, and use the Mosquito Barrier around patios and other "hangout" areas to keep them at bay until they have died from landing on the Bifen-treated surfaces. 

Yes, Bifen IT can be used both indoors and outdoors.

Talstar P and Bifen IT are essentially the same product, just made by two different manufacturers.  Both contain the exact same active ingredient in the same amount.  Both are labled for over 75 insect pests and both are commonly recommended for general indoor and outdoor pest control. 

We recommend that you do not apply Bifen IT when birds are present. All surfaces/areas should be completely dried and ventilated prior to the return of the birds.

Bifen IT can be used to kill clover mites and will leave a residual of up to 30 days outside.  It will not repel them from the area but instead will continue to kill those that contact a treated surface after application.  We have a guide here with more information on treating and preventing this pest.  Pets need to be kept out of the area while products are being applied but can return once all surfaces are dry. 

You can water 24 hours after applying Bifen IT.