Permethrin SFR 36.8% - Questions & Answers

Brown recluse spiders and black widow spiders share the same biology as every other species of spiders and are not any harder to kill than other spiders. Permethrin SFR is labeled for spiders and should do a great job in helping you eliminate spiders in and around your home. Permethrin SFR is safe around children and pets as long as they are kept out of the area during the application and they do not return to the area until it is dry. Permethrin SFR should not be used in an organic garden because it is a synthetic product and it is not labeled for use on most types of edible plants.

You did not mention a specific product, but we assume you are speaking of Permethrin SFR or something similar.  You can use anywhere from 1 ounce to 3 ounces of Permethrin per gallon of water depending on what you are treating.  You should read the product label for complete treating instructions.

Yes, you can use Permethrin SFR on your dog. You should use ¼ fl. oz of product to 1¼ gallons water then thoroughly wet the animal to the skin with sponge or rag. Let drip dry. You can find these instructions on page 16 of the Permethrin SFR product label which we have linked in this answer for your convenience but is always available on the Permrthrin SFR product page.

You will need to use 1 2/3 fl. oz. for each gallon of water to get a 0.5% ratio. If you only need to mix one quart of solution at a time you will need to use just under 1/2 (0.43) oz of Permethrin SFR per quart of water to get a 0.5% mixture.

Yes, you can use Permethrin SFR indoors for fleas.  You can also use it outside and directly on dogs(do NOT use on cats).  Please read the product label for complete instructions.

Permethrin SFR 36.8% will last for about 3 years from the date of purchase as long as it is stored out of extreme temperatures and out of direct sunlight.

The best products we can recommend for tick control would be the Permethrin SFR mixed with the NyGuard IGR. The Permethrin SFR is the killing agent that will kill and repel the ticks in the areas that you treat. The NyGuard IGR is a birth control to keep the ticks from reproducing and to keep immature stages of the ticks from growing into reproducing adults. These two products can be mixed together and sprayed at the same time for a letal combo to the tick population. Spraying with the Permethrin SFR every 2 weeks at first can be needed and then back off to every 30-60 days. The NyGuard will hold up typically 3-4 months outdoors.

You cannot use the Permethrin SFR on clothing at all. Even though the products contain the same active ingredients, the formulations are very different and most  of our permethrin products contain chemicals that are unsafe to have next to your skin. We do carry Tick Block which is an appropriate formulation for clothing.

The product label for the Permethrin SFR gives a few different rates for applying to cattle.

You can use Permethrin SFR, but it will NOT kill wasps on contact.  The wasps/bees will die, but not immediately.  It can take a few minutes for them to succumb to the product.  Permethrin will help to deter them from nesting in areas it has been sprayed.  Wasp Freeze is your best choice if you are looking to knock down wasps instantly.

Yes, Permethrin SFR 36.8%  is labeled for use on livestock such as horses and cattle as well as other animals. We have listed the specifications for horses below but you can find more information on the product label.

For use on Horses to control: Horn flies, face flies, stable flies, house flies, horse flies, black flies, eye gnats, mange mites, scabies mites, ticks, lice and fleas: Use ¼ fl. oz. to 1 pt. water, 0.6257% AI. Low pressure spray. Application: 1-2 fl. oz. spray per animal. Spot treat back, face, legs tail and ears.

 

The difference between the Permethrin SFR 36.8% and Permethrin 10% is really just the amount of active ingredient in each product.

Most all insecticides we sell do not have an expiration date, but most manufacturers place at least a 5 year shelf life on their products.  Most can last longer, but the manufacturers recommend you use them within at least 5 years, so your bottle is still plenty good.

The only edible vegetation that Permethrin SFR can be used on would be the fruit and nut trees listed on the product label. A more appropriate product for your needs would be Hi-Yield Indoor/Outdoor 10% Permethrin Insecticide. This particular product is formulated and labeled for use on many different types of edible vegetation including most veggies commonly grown in a home garden. 

Permethrin SFR can hold up to rain when dry. It is important to have 24 hours before the application and 24 hours after the application rain free.

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 be perfect.

With Permethrin SFR 36.8%, you will use 1 2/3 fl. oz. per gallon of water. We do recommend mixing this with an IGR (insect growth regulator) for your first treatment. This is like a birth control for the fleas and will stop them from laying eggs. Archer IGR is a good product to use. You will need to vacuum everyday for 14 days and do a second treatment of the Permethrin SFR. These products can be used in both the yard and in your home. We would recommend treating both so that fleas are not being brought from outdoors, making the infestation worse. These treatments may need to be done more than twice.

You will need to use 1 2/3 fl. oz of Permethrin SFR for each gallon of water for indoor or outdoor spraying. If you only need to mix one quart of solution at a time you will need to use just under 1/2 (0.43) oz of Permethrin SFR per quart of water. The safety of the product indoors applies to the same rules outdoors, keep pets out of the treatment areas during application and until its had time to completely dry. Be sure to follow all label instructions for where it can be sprayed indoors. 

Permethrin SFR will kill stink bugs but there are other products such as Cyper WP which lasts a bit longer and stays on the surface of porous areas making it more available to this pest. Unfortunately if you are dealing with them in your house right now you will only see limited results. Stink bugs move into structures to overwinter. They usually squeeze into wall voids, false ceilings, attics and other areas that are inaccessible to people and insecticides. As the heat kicks on in the house, the stink bugs warm up and start becoming active and emerge from hiding, driving homeowners nuts. Because most folks usually have no idea where the bugs are harboring you can only treat around baseboards, door frames and window frames and hope the insects will emerge where you have sprayed. After they contact the treated areas it can take several hours for them to die. It is still worth spraying now to get rid of some of the bugs, but you will keep seeing them until late spring when they will emerge en masse and leave your home. They do not eat, mate or lay eggs while indoors so need to worry about any damage or future baby stink bugs. This year you can be proactive by stopping these pests before they move in for the winter. You should spray Cyper WP outdoors around your door frames, window frames, vents, eaves, around the bottom of your foundation, and any other crack or crevice where an insect could gain entry once a month August-November. Most folks see a 80-90% reduction in stink bugs the first year and even better results in the following years as the stinkbug pheromone fades away.