Permethrin SFR 36.8% - Questions & Answers

Permethrin SFR 36.8% will kill ants that come into contact with the residual on treated surfaces around the perimeter of the home, although it will not kill them on contact. The product is not formulated to act as a repellent.

Permethrin SFR does have a residual effect and a good knockdown quality which is why it is very popular for tick control.  The residual can be expected to last for about 30 days.  The Permethrin SFR will not penetrate tick eggs, however once a tick hatches it is very susceptible to the Permethrin and should die very quickly.  Permethrin can be diluted for application on animals.  Please read the product label for full instructions on treating animals.

Neither Permethrin nor Malathion is labeled to use outdoors to control mosquitoes. We do carry ULD BP-300 Fogging concentrate and Riptide which are both labeled for use in foggers for outdoor mosquito control. Most products that can be used in foggers for outdoor mosquito control will contain pyrethrins, a short acting contact insecticide and would need to be applied frequently. We recommend folks use a product such as Talstar P for a long lasting residual for mosquito control. Talstar cannot be used in a fogger but it can be used in mist blower, hand pump sprayer or a hose end sprayer for mosquito control. Talstar P would need to be applied once a month for mosquito control.

The mixing ratio for Permethrin SFR 36.8% on lawns is anywhere between 0.4 oz up to 0.8 oz per 1000 square feet or per gallon of water. A dial setting at half of an ounce per gallon on the hose end sprayer would work for most sprayers, but we would recommend to calibrate your equipment with just water before applying your insecticide to make sure you are not using too little or too much insecticide for the area.

Permethrin SFR is only labeled for mosquito control on livestock premises. A better product for mosquito control outdoors is Talstar P. Talstar P is gentle on vegetation where you will be spraying for mosquitoes and it will last up to one month for mosquito control. When using Talstar for mosquito control, you will use 1 oz of product per gallon of water. Talstar P can also be used for tick control, if you would like to use only one product for your needs.

Permethrin SFR is labeled for chinch bugs.  Per the product label you use 0.4 to 0.8 oz per 1000 sqft in 4 -25 gallons of water.  You want to be sure to use enough water to get the product below the thatch layer when dealing with chinch bugs.

There are very few products that have sarcoptic mites or scabies mites listed on their product labels. You didn't mention if the mites are a problem on people or on animals, but the environmental treatment is pretty much the same. Wash and dry (high heat) all bedding and thoroughly vacuum all resting areas. Indoors you can use a product called Steri-Fab on all upholstered furniture, rugs and pet beds and resting areas. Outdoors you can use a product called Permethrin SFR on pet resting areas and other areas frequented by your pet. In most cases, it is not necessary to treat the outdoor environment unless it is frequented by animals such as stray dogs or foxes because sarcoptic mites cannot live very long off of the host animal (usually not more than 72 hours).

According to the Permethrin SFR product label you will mix ¼ fl. oz. of concentrate to 1 pt. water and use 1-2 fl. oz. of dilution to spray on each animal. Spot treat back, face, legs tail and ears. If you would like to "dip" the dogs you will use ¼ fl. oz. to 1¼ gallons water and thoroughly wet the dog to the skin with sponge or rag. Let drip dry.

The mixing ratio for Permethrin SFR 36.8% is 1 2/3 fl. oz. per gallon of water.

Permethrin SFR is labeled for roaches and is widely used by professionals for this purpose both indoors and outdoors. Be sure to read and follow the Permethrin product label for the best results.

 4 oz Permethrin SFR 36.8% to 4 gallons water is safe.  It will be safe for people and pets to re enter the area after it has dried. After it has dried it will become rain fast. 

Unfortunately, there is no easy solution when it comes to pine beetles. Infected trees should be cut down (before the newly hatched beetles fly out of the trees in the spring/summer) and the wood burned or chipped, while other still healthy trees should be sprayed annually to protect them. Because of the natural boring behavior of the beetle they are protected from topically applied insecticides and systemic insecticides (those injected into the tree or applied as a root drench) have proven ineffective for pine beetle infestations. Healthy trees can be protected before the beetles attack by topically spraying them with a product called Permethrin SFR. The tree should be sprayed from the ground to 15 ft up the trunk to prevent future infestations.

Permethrin SFR is not labeled for bedbug control in homes. You can use Permethrin SFR in your roach control program in homes. Please see our bedbug control page for products that can be used in homes for bedbug control.

Permethrin SFR 36.8% will kill Carpenter Ants that contact the treated area. Keep it mind, it will not kill off the colony. You will need something that is transferred back to the colony. Please check out our Carpenter Ant Guide which list our top recommendations for Carpenter ant control. 

To dilute Permethrin SFR 36.8% into a 0.5% solution, use 1 2/3 fluid ounces per gallon of water. Please see the product label for complete mixing and application instructions.

Permethrin SFR 36.8% is mixed at a rate of 1 2/3 fl oz per gallon of water.   We also recommend you review our Roach Guide so you can understand how to  implement a full roach control program for best efficacy as sprays alone will not eliminate roaches and do not act as a repellents to keep them away.

Permethrin SFR is a good option for cicada killer wasps. This will be applied directly to the areas where you have seen activity. The mixing ratio is 1.45 fl. oz. per gallon of water. Be sure to apply the product later at night when the wasps are not active. 

Both permethrin and bifenthrin are synthetic pyrethroids and will provide very comparable results for zimmerman moths. Bifenthrin does tend to last a little longer than permethrin.

You should only mix the Permethrin SFR with water when you are ready to apply. Any mixed solution should be dispersed within 24 hours of mixing. Undiluted in the original container (stored away from extreme temps) you will get about a three year shelf life from the date of purchase.

Permethrin SFR 36.8%? can be used as a flea and tick dip on dogs per the product label. Instructions are 1/4  fl. oz. to 1 1/4 gallons (0.0626% AI).  Dip wash. Thoroughly wet animal to water, skin with sponge or rag.  Let drip dry.

Is the Permethrin SFR working well?  If so, we always recommend to stick with what works.  Once downside to Permethrin SFR is that it usually does not last very long outside, usually only a week or two.  We do have a product called Talstar, which is our most popular product for flea control and it will last for 30 days before needing to be reapplied.