Insecticide for Black Widow Spiders?

I am looking for best insecticide to kill black widow spiders outside.

Christi from Dirt Road, AR


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By (Guest Post)
June 22, 20070 found this helpful

I don't know, I only know that my god daughter had these in NC and that they got an exterminator. She is very, very frugal and I believe if there had been another way, she would have found it. I am not sure though. I just yesterday purchased a spray for spiders at Wal-Mart for my grand daughter to take to camp (she is afraid of spiders), I did not read what kind of spiders it will kill although

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By sheila (Guest Post)
October 1, 20070 found this helpful

You can't spray for black widows. My exterminator told me they 'hold their breath' for days. I know this because I live in Phoenix and last year caught one and had her in a jar - sealed and I sprayed her.


She was still alive after 5 days. I put diatomaceous earth I got at a local nursery. It is natural and will kill them.

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October 1, 20070 found this helpful

Thanks for the info Shelia!!

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April 30, 20080 found this helpful

Those harmless pretty iridescent bluish wasps are pecifically after young widows. We've had several widows in our yard over the years. You get to where you've seen so many webs you can recognize it instantly. They are aggressive when they have eggs, guarding their nest they will jump at you, especially if they are hungry and run in a blur with those long front legs, too, trying to get at you.

We sprayed or rather 'drowned' one with poison, 15 minutes later we jabbed at it with a stick and it flew towards us with incredible speed. Don't mess with one. I would never try to stomp one, could maybe get up your pant leg, that happened to my Dad one time with a Tarantula at the park. He excitedly danced a wild jig and finally shook it out.


The last widow we encountered here had 3 eggs in her nest, we sprayed it with carb. cleaner and burned it. I've seen them hang in the air, fly down a hole in the ground, but mostly I see them around wood outside.

We had a small baby widow inside our house, when they are very small they are flesh colored then as they molt they get darker all over. The baby I killed inside was all flesh colored -except the big bulbous part was the shiny black.
Also, the Northern widow looks just like it except it has 4 large red dots on its back & is just as dangerous.

Widows kill brown recluse spiders. The Steatoda Triangulosa is of the comb footed spiders, it is a small widow. Small, very dark brown with tiny white spots on its back, its poison is 10 times more poisonous than the black widow but small enough to not hurt humans --that's what I read anyway--but potent enough to kill brown recluse.


We had these tiny things all over our kitchen and a friend had some of these in a sun room with dead brown recluse nearby. I could see from the shape of it that it was some kind of widow, I got to looking around on the net. I don't bother these outside.

I have cut up hedge apples and thrown under the house to repel insects but the best thing to do is have a professional come every other month for $25 to get it under control. I don't like the pesticide guy to come though because poisons scare me and we've got kids. When we do have it sprayed we don't see any for a long time, it really calms 'em down. They freak me out though! If you see 'em around everywhere like I have then you should read all you can about them so you can recognize the signs of their presence. All wasps paralyze spiders and put them in their nests. I try to leave wasps to themselves.

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May 1, 20080 found this helpful

Thanks Shailynn for your information. We have those purple looking wasps and we call them "dirt dobbers". I will NEVER kill another one if they eat black widows!! Last year, in our garden, we grew watermelons...they were covered in black widow spiders.


Also, we had an above ground swimming pool, the kind that has the blow up ring around the top. The black widows would get under the ring...we killed ATLEAST two a day.

We had Mr Bug come a spray, but it didnt do any good. They still kept coming. I PRAY that they are not that bad this year.

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May 9, 20080 found this helpful

A natural remedy for 'crawly things'

We've been meaning to get a chicken coop up to fight off the black widows, brown recluse, ticks, fleas and every other repulsive thing with chickens. We have cats but I think after a few rounds with the bandy roosters they'll leave 'em be.
You might try it. Let me know if you do and if it works.

in Southern MO

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By xtremewik (Guest Post)
September 9, 20080 found this helpful

My garage is full of Black widows. Man seems like we kill 3 or 4 a week.


Got to be away to get rid of them. Also big black funnel spiders. They're huge.

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April 24, 20090 found this helpful

Two years ago, I used a chemical specifically formulated for black widows. I sprayed it all about the house and property, and it wiped out the black widow population completely. I had one widow that was actually hiding up under one of the eaves on the house that within minutes was hanging down as dead as it cold be. The chemical is called Klor and is produced by Ortho. It works!

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