Permethrin SFR 36.8% - Questions & Answers

Permethrin 36.8% and Permethrin SFR 36.8% are the same product with the same percentage of active ingredient. We do not recommend the product for bedbug treatments. Please find our Bedbug Treatment Kits for the most effective control as well as our 'How to Get Rid of Bedbugs' article for more information on application instructions. Please let us know if you need anything else or if you have questions.

We would not recommend Permethrin SFR 36.8% for a bed bug treatment because they can easily grow resistance. We would definitely recommend something more like Temprid SC because it has two active ingredients that actually work against bed bugs that may have resitance to other products. We would recommend that you check our guide on How to get rid of bed bugs for more detailed information.

Since Permethrin SFR is an oil-based product it is going to be more prone to break down in the extreme heat and sunlight in your area faster than other products. You will likely have to reapply the Permethrin every 30 days to keep insect populations under control and have a strong residual still on the surface. We would suggest when you get ready to order more product in the future going with something better designed for your environment like Cy Kick CS or Onslaught FastCap which will also likely give a better control over arachnids and other pests they feed on due to their encapsulation. 

You want to be very careful when using Permethrin SFR 36.8% to treat for hive beetles as the Permethrin is highly toxic to bees! According to the attached article from the University of Arkansas about Managing Small Hive Beetles :   Soil Treatment - The pupal stage is a vulnerable time in the beetle life cycle. Slightly moist, loose, sandy soil is optimal for their development. Locating colonies on hard clay or rocky soil, rather than light sandy soil, can reduce the number of beetly larvae that successfully pupate. If larvae are present in the colony, soil around the hive can be treated with a permethrin drench to prevent the larvae from pupating, killing them in the soil. 

We also suggest that you contact your local Extension office  to see what their recommendations are for as far as time frame for you to do this in your area. Most times they can give you much more precise advice on those times of years more specific to your local area. 

Permethrin SFR 36.8% is labeled to be applied to goats and dogs as directed on the product label.

No, Permethrin SFR 36.8% is not labeled to treat for mice. Please see our Rodent Control Page and Treatment Guide on the best steps and products to eradicate a mice population. 

Permethrin SFR is not labeled to be used in a fogger.  Depending on where you are treating, Sector or Pyranha are two permethrin-based products that can be used in foggers.  Please refer to the product labels for correct usage instructions.

Permethrin SFR would be mixed at 1 2/3 fl oz per gallon of water for wasps.  We have a great guide with instructions on "How to Get Rid of & Kill Wasps" that might help, it includes a video of where you would spray to help deter them from nesting in areas around the home.

Dending on many factors such as insect type, etc  Permethrin SFR 36.8%? can take minutes to hours to kill insects. Roach Control Rotation A Kit? is great for treating roaches. It offers all of the products needed to perform a professional treatment in your home to eradicate the insect. Please take a few moments to read our article on How to Get Rid of Roaches for additional helpful information.

Permethrin SFR 36.8% is not labeled for chiggers. Onslaught insecticide is labeled for chiggers and can be used both indoors and outdoors as a broadcast spray. Chiggers are not known to infest structures. Chiggers are most likely outdoors in your yard. Many people are lead to believe that the infestation is indoors because they do not feel the effects of the chigger bites right away and then are lead to believe they are being bitten at a later time. Treatments for chiggers should begin in May and could need to continue through the summer as new chiggers move into the area. Treating the entire lawn is of little benefit because chiggers avoid direct sunlight and normally will not infest areas that are mowed or otherwise well maintained. Focus treatment on the unkempt areas of the lawn and lawn edge. You can also use Onslaught to do a barrier treatment around the outside of your home and in your crawl space to stop pests from moving indoors. If you feel strongly that you are being bitten inside by something we would urge you to get a sample of the pest and have it professionally identified by an entomologist. You can find an entomologist in your area by contacting your local cooperative extension office.

Hi yield 38 contains 38% Permethirn, whereas Permethrin SFR contains 36.8% Permethrin. They also are made by different manufacturers. They are both applied the same way and only labeled for outdoor use.

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.

Permethrin SFR will not work for slug control because of the mucus covering on the slugs. You can find all of our slug control products here: Slug Control Products

Per the product label: Use 4 to 8 ounces per 100 gallons of water or Broadcast 0.9 to 1.8 Fluid Ounces Per 10,000 sq. ft. This will be best applied by way of a tank sprayer and not by a hose end sprayer. If a hose end sprayer is the only available option it must be one with a dial to select the correct dilution rate per gallon/1000 sq/ft. You would set the dial to 1 teaspoon per gallon of water per 1000 sq/ft. 

Permethrin SFR 36.8% is labeled to be used in kennels and would be safe when used as directed on the product label.  It is also safe to use as a flea/tick dip on dogs.

Permethrin SFR would not be a recommended product as a soil drench for Ash Borers as it is not a systemic and will only kill the insects that contact the treated soil.  Dominion 2L is labeled to use on trees to help protect against boring beetles. Treatments should begin in May or June and should be done every year to protect trees from the Emerald Ash Borers. Most people use a 5 gallon bucket or a large watering can to apply Dominion as a soil drench. You will need 0.1 to 0.2 fl. oz. (3 to 6 mL) of Dominion 2L per inch of trunk diameter for trees. It is recommended that you use the higher rate for boring beetles. The amount of water that is used will vary depending on soil conditions and volumes that are easy for applicators to use. The minimum amount of water that should be used is 1 pint per inch of trunk diameter for trees but you may use 1 quart -1 gallon of water per inch of trunk diameter for trees. Denser soils such as clay do not accept water as readily, so the lower volume of water is suggested.  Since sandy soils can accept more water, using the higher volume of water is preferred. After the soil drench has been applied you should water it in with at east 1/2 inch of water. Note: Water simply acts as a carrier and it is important that even distribution of the product is achieved. Thus, more water may be used if the applicator feels runoff will not occur and proper penetration of the root zone is achieved. Insecticides applied to the soil are taken up by the roots and trans-located throughout the tree or shrub. Root/soil drenches offer the advantage of requiring no special equipment to apply (other than a bucket or watering can). However, surface layers of organic matter, such as mulch or leaf litter, can bind the insecticide and reduce uptake. Before applying drenches, it is important to remove or pull back any mulch or dead leaves so the insecticide solution is poured directly on the mineral soil. It is also important to keep the soil around the tree or shrub moist for the next 10-14 days after applications to encourage uptake.

Onslaught FastCap is a unique insecticide that has an encapsulated pyrethroid plus prallethrin for quick knockdown. Permethrin SFR contains permethrin - a different pyrethroid - and it is not encapsulated. The encapsulation really helps products to last longer in the heat and sunlight in desert environments better than the Permethrin SFR would. Our other most popular insecticides to rotate with Onslaught would be Cyzmic CS or CyKick CS. You could always add 0.25 - 0.5 oz of ExciteR insecticide to either Cyzmic or CyKick for that extra quick knockdown, if desired.

For indoor use you should use for roach control use 1 2 / 3 f l . o z .for each gallon of water used. We also recommend you review our Roach Guide so you can understand how to  implement a full roach control program for best efficacy.

You can use any of the rates that you mentioned for flea control. The most common rates used for lawns would be .8 ounces per gallon. You will want to keep your grass short and target your sprays towards any area that holds moisture more than another. It can also help to use an insect growth regulator with the spray to help stop the reproductive cycle of the fleas. One of the best IGRs for this would be the NyGuard IGR which can easily be mixed and sprayed at the same time with the Permethrin to be applied at the same time.

Permethrin SFR is not labeled for use on any edibles.

We would recommend using Hi-Yield Indoor/Outdoor Broad Use Insecticide. It is labeled for various insects, including squash bugs and is safe for use on listed edibles. This product does have the same active ingredient as Permethrin SFR, however, it is at a lower concentration. That product cannot be diluted down and used on edibles.