brown recluse spiders


Is it a good idea to lay cedar chips up against the perimeter of the house to protect against brown recluse spiders?

Not really. In fact it's never a good idea to lay any kind of mulch up tight to the foundation. You see, all mulch will do is to preserve if not create heat on it's underside (where it contacts the ground). This heat will no doubt attract insects. And when you have insects living right up alongside the home, the odds of some getting inside are greatly increased.

Now if you must have mulch like cedar chips or pine straw up tight to your homes foundation, be sure to apply some BIFEN GRANULES to it every 2-3 months. This way the Bifen will kill off all the insects that attempt to move into this prime real estate.

Bifen Granules:

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We've got several products that can be used effectively to take care of brown recluse spiders. The key is treating the right areas. If you review our article, you'll learn it covers how to treat the outside of the home, the inside living areas of the home as well as attics and crawl spaces. Each of these areas require different types of products to get the best results and for starters, I'd say to get the CYONARA to mix up and spray along with some PHANTOM AEROSOL.

If it turns out they're in your attic or other hidden space, get one of the dusts like the DRIONE or DELTAMETHRIN. More details on these products can be found in our article posted here:

Spider Control Inside:

Spider Control Outside:




Deltamethrin Dust:

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We just got a house that now seems to have brown recluse spiders. We have only found them in own master bedroom and we think that they are coming from inside the house most possible the attic and not from outside. Will bombing the house work?

No. At best aerosol treatments for spiders are just "okay" and that can only happen when using something like PHANTOM. But TOTAL RELEASE FOGGERS are quite limited and really only work in the immediate open area of the room where applied. Spiders, like many pests, will be hidden and tend to avoid the treated area. The net result is yeah, you might kill 10-20 % of the local population but in the end, there will be so many still alive and kicking you will feel as if you did nothing but waste your money.

I suggest you read our brown recluse TREATMENTS article, you'll learn the best way to handle this problem. In your situation, it's quite possible you'll need to treat some HIDDEN AREAS like wall voids or attics. You might also have to treat OUTSIDE AREAS of the home in case you think they're foraging in.

Here are direct links to the information and products listed above:

Phantom Aerosol

Total Release Fogger:

Inside Treatments for Spiders

Hidden Area Treatment for Spiders

Outside Treatments for Spiders:

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I have a home problem with browns and would like to know the best way to treat them. Mostly in my sons attic. Also will the smell of peppermint deter them?

If you read through our SPIDER CONTROL ARTICLE, you'll see we have several products that can be used on and around the home. However, you won't find peppermint listed as a repellent since we have not seen any data to suggest it will help. But what does work well when it comes to treating attic spaces is DRIONE DUST. It not only lasts 6-12 months, it's highly repellent to most any insect or arachnid making it ideally suited for long term protection in this area of the home where a lot of pests like to nest.

For starters, I'd go with the Drione Dust and get it applied throughout the space using the DUSTIN MIZER. I also recommend getting some SPIDER TRAPS to set up in the living spaces. They'll help monitor the areas so that if any brown recluse spiders are active in other areas of the home besides just the attic, you'll be able to tell from what the traps catch and take appropriate action accordingly.

Additionally, I suggest you start spraying the outside of the home to prevent more from getting inside. The DELTAMETHRIN is a great product for this use with treatments remaining active for up to 2-3 months. It's odorless and easy to apply with any standard PUMP SPRAYER.

Here are links to the products and information listed above:

Spider Control Article:

Drione Dust:

Dustin Mizer:

Spider Traps:


Pump Sprayer:

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Hi, i appreciate your site… it is very informative.  Read your spider control article and have a question regarding deltamethrin and Lamda-Cyhalothrin.  Are there any particular differences between the two?  For example, is one better suited for a specific type of treatment/insect… or are they about the same?  We plan to spray the interior of our house with one of those (were thinking cyonora), and use a dust in our crawl space.  Our main concern is reducing the number of brown recluse spiders.

Thanks for any advice/clarification!

There is little to no difference in overall performance from either of the actives you listed. Both have low to no odor, both work well on a wide range of pests and both can last 2-3 months. Overall they are excellent choices for use in and around the home. When combined with the other materials we have listed on our SPIDER CONTROL PRODUCT PAGE, I'm sure you'll be satisifed with the level of pest control you'll be able to maintain around the home. When used throughout the year, you should be able to keep a pest free environment if either is employed. Should you have further questions, give us a call on our toll free 1-800-877-7290 and Thanks for the great feedback!

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I have a BIG spider problem!  I belive I have captured a brown recluse spider.  I need to identify it, if you could give me a picture or a discription it would help out a lot!
Brown Recluse Spiders are quite unique and not as common as people think. It is possible you have seen one; we have a good brown reluse spider picture here. If you need further help, give us a call at 1.800.877.7290.

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Many spiders are clearly visible during the day. Web making spiders can be seen literally hanging around. However, there are many that are shy and reclusive. Brown Recluse Spiders are such a spider. During the day or in any room where there is bright lights, they will make themselves scarce. They don't like to be seen and are typically sensitive to light. They like to move under flat objects, into cracks and crevices and up under siding. These locations will be the key to solving a local infestation and treating them well will be important.

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Brown Recluse Treatments inside Homes

Treating inside a home for brown recluse spiders will many times be the only way you'll be able to knock them out once and for all. Once established inside, brown recluse spiders can be difficult to control. They naturally hide and avoid bright light making key locations difficult to identify. Brown recluse spray should be directed toward the floor boards and residuals should be applied where there have been sightings. Many people get worried about spraying inside but the bottom line is you have no choice. Brown recluse spiders present a hazard to anyone or animal and should not be ignored!

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