PRODUCT DESCRIPTION:     Low odor concentrate which is mixed with water and has a broad inside and outside label. Works well for several pests and not only kills insects quickly but also repels them. Please note this product comes in many different sizes as listed here.

TARGET PESTS:     Most insects including Ants, Bees, Boxelder Bugs, Centipedes, Chiggers, Cockroaches, Crickets, Earwigs, Elm Leaf Beetles, Firebrats, Fleas, Flies, Kudzu Beetles, Ladybugs, Millipedes, Mosquitoes, Mud Daubers, Pillbugs, Silverfish, Sowbugs, Bees, Cockroaches, Scorpions, Spiders, Stinkbugs, Ticks, Wasps, Wood Infesting Beetles and just about any pest found on the outside of homes.

WHERE TO USE IT:    Outside or inside as needed.

RATE OF APPLICATION:   1 ounce to a gallon of water; 1 gallon of mixed solution can cover 500-1000 sq/ft of surface area depending on what you’re treating. For porous surfaces like raw wood,  you’ll only get 500 sq/ft per gallon. For painted surfaces, vinyl siding, etc., 1 gallon of mixed material can cover 1000 sq/ft.






$15.00  1 oz (455859)(CANNOT SHIP TO CA or NY)(Free Standard Shipping)
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$35.00    4 oz (455864)(CANNOT SHIP TO CA or NY)(Free Standard Shipping)
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$55.00    8 oz (455865)(CANNOT SHIP TO CA or NY)(Free Standard Shipping)
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$65.00  16 oz   (455861)(CANNOT SHIP TO NY)(Free Standard Shipping)
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$90.00    32 oz (455229) (CANNOT SHIP TO NY)
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$125.00     128 oz (455870)(CANNOT SHIP TO NY)
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$200.00     256 oz (455871)(CANNOT SHIP TO NY)
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July 10, 2012

Comments on VIPER CYPERMETHRIN Leave a Comment

May 9, 2014

Corrie @ 8:05 am #

I have three cats in the house; will this be safe for them to be around if I use it indoors? Also, my problem is with ladybugs. Is it more effective to use this outside, around my home, or inside around windows and doors?

June 17, 2014

tommie scalley @ 12:03 am #

Can I use Viper in an insecticide smoker? Would it be safe?

June 18, 2014

dan @ 6:06 am #

I have a 1 year old son and a small dog. Is this safe to use indoors and if so what areas?


July 12, 2014

Bill @ 8:26 pm #

Can this be used with a hose end sprayer such as the GILMOUR DIAL-A-MIX 499?


July 13, 2014
July 14, 2014

Chris @ 12:26 pm #


Will this product work for killing Cicada killer Wasps?

August 17, 2014

Jeff @ 12:44 pm #

Will the Cypermethrin hurt my vinyl siding as in stain or discoloring it? My wife sprayed some bee’s with a spray I get from work called CRC wasp and hornet killer and it stained my siding. Also, I’m having an issue with hornets under my deck. It’s a little wet at times and they seem to love going into the mud. Is this product going to keep them away from area? I’m currently redirecting water away to get rid of the problem but just in case I can’t keep it totally dry will this help?

August 21, 2014

Beth @ 4:58 am #

I’m looking for a way to keep the bald-faced hornets off of my balcony but one that won’t hurt the hummingbirds that feed there. Is Viper-C a good product for this (spraying the railing, floor, etc.)? Currently using EcoSmart Organic Pest Control which I had on hand. It does repel them for a day or two but it doesn’t last very long. I’m 3 stories up and have no idea where the nest is.

Thanks for any advice!

September 2, 2014

Michael @ 2:12 pm #

My son recently developed a severe and potentially deadly reaction to Wasps and Hornets. Will this product kill both of these? Also, I see that this product is used as a preventative measure which is what I am mainly looking for along common walkways, sitting areas, etc. around our property. I read the component breakdown of Cypermethrin and it seems that it breaks down very rapidly once dispensed, especially in soil (1 to 2 days). How is it considered preventative? My last question relates to other animals. We are on a farm that has chickens, goats etc., is this product safe for all these type animals?

Michael @ 2:45 pm #

@admin: Thank you for the quick response! I got the info about cypermethrin from Wikipedia. Although I may have been confused concerning the 1 to 2 days (I’ve looked at several options for this). It says that it breaks down quicker in sunlight etc. but does not give a time frame. I do see that bifenthria and essentria ic3 also seem to be potentially good at the use I am looking for. Can you give me your opinion on the best option? I am looking more for a repellent than a killer. Although killing is just fine. Include some links for the best product for me. Thanks!

March 30, 2015

Chris McNeil @ 10:13 am #


Purchased this just in case I have issues with carpenter bees later on. I’ve been dealing with these for 2 years and just now thought that I can spray their nests (sort of). Turns out their galleries should be dusted and corked first, then you can spray the fence posts with this pesticide, but I’d already had a local pest company spray my posts before this purchase. But rather than stain the posts right away (to hold in the pesticide), I decided to purchase additional pesticide (a concentrate) that I could spray on in a couple months. An alternative is to purchase a paint/stain additive that will inhibit the bees from boring new holes.

April 10, 2015

Mel Davenport @ 11:52 am #


I used this product mixed in a pump sprayer to treat the inside of my house for a sudden bug infestation (small roach looking insects). That was four days ago and I haven’t seen any moving since I sprayed. It does, however, have a pretty strong odor that took about 4 or 5 hours to dissipate. I also used it in my old barn this morning to try and reduce the wasps and carpenter bees. It seems to have worked.

April 20, 2015

Michael Hoxter @ 3:40 pm #


Great product!

May 1, 2015

Robin Vasichek @ 11:13 am #


This product is amazing! I live in a cedar sided house and the carpenter bees were a big problem. I spray the house 3 or 4 times a year, depending on rain, and no more bees dive bombing you and no more holes in the siding. This even keeps the wood peckers away.

May 16, 2015

David Ludwig @ 4:25 pm #


Viper Really Works. I have been using the Viper and the bugs are dead usually in 24 hours. Using as directed, in the spring and fall, has kept my hone bug free for several years now. Living in a rural area where you’ll find many different bugs is a must do in my case. Anyone that has a bug problem should do as I have. The service I have received from Bug Spray has been the best I have ever received when ordering and the shipping has been great. Dave Ludwig

May 20, 2015

Chau Tran @ 7:37 am #


Good. Works on stink bugs.

June 6, 2015

Lana Toews @ 6:16 pm #

Is Viper and Drione Dust safe around edible plants like Rhubarb? The earwigs and sowbugs are eating on the stalks. Thank you, Lana

June 7, 2015
June 30, 2015

Vivian Campbell @ 7:23 am #


Great product! Worked like a charm. Perfect size for the job that I needed it for. Came to me in record time. Instructions for use and well packed. Thank you and I will continue to do business with this company.

July 14, 2015

Barrett Hanson @ 5:46 am #


Spiders be gone! This is a very reliable product, quick action, low application odor that quickly fades. Very carpet friendly. I have never had an issue along a carpeted edge. Quick action and lasting effects. I would recommend this product.

August 30, 2015

Richard Nobile @ 4:02 pm #


Great product and a Great company! I have purchased from for a number of years to rid my property of Cicada Killers. At one point a few years ago, they had taken over virtually all of my lawn. I went to Bug Spray .com, purchased the Viper, and Spreader Sticker, and have now almost eliminated them entirely. Their products worked much better than the insect service I had used to get rid of these pests!

September 5, 2015

David @ 11:08 am #

Hey. Can this product be applied with a pressure washer with a chemical injector?

September 29, 2015

Barbara Freeburg @ 8:04 am #


This does work well. What a relief!! So tired of being bombarded by stink bugs, and this gets rid of them. I would recommend this product to anyone who has a bug problem.

October 20, 2015

Bernard VanEaton @ 10:16 am #


Great product!

October 29, 2015

Karen Terrell @ 10:41 am #


Used this outside around the house & in basement. Worked well for camel crickets , spiders, and Beatles. Would recommend.

December 29, 2015

Frank Garner @ 8:28 am #


AWESOME! As you go On-Line today searching for an acceptable solution for the problem you are experiencing at the time, you ALWAYS wonder what will be the outcome. After I did my research, I placed an order…. WELL, this was a Bull’s-eye. I cleaned my home in preparation of spray applications. Applied the product and within the week or so, I began to see a full reduction in the pest (Hister Beetles). I am convinced that the product works. Thank You. Today, they are almost gone and I have spray leftover.

March 14, 2016

Charles Zhe @ 9:13 pm #


Use: Carpenter Bee spray
Fast ship, great product. Excellent transaction.

March 27, 2016

Alexa @ 11:17 am #

Hi there. I was wondering if this is safe to use in a household with many reptiles (lizards) as pets? I’ve read that it can repel lizards by destroying their food source, but not sure if it would harm the lizards themselves if the product was used in the same room or in the house. Thanks!

April 16, 2016

Alexa @ 2:08 pm #

We have a wasp problem and they now live both inside and outside of our house, so looking for a product that would be safe for our pets (bird, dog, cat, and lizards).

April 17, 2016
April 20, 2016

Joyce Miltenberger @ 8:13 am #


It looks like it’s working! This product, combined with the Drione dust, appears to be doing the job. We sprayed the whole exterior of the cabin this weekend after doing a complete exterior dusting last week. I usually find 10+ wasps in the Master bedroom every day. Today, 2 days later, I found zero. Zero! Finally it looks like we can stay in the cabin overnight. I found some stink bugs, but they were pretty much dead. Also see less activity outside with carpenter bees. They are awful this year in VA. I like it!

May 29, 2016

Shannon Thompson @ 6:37 pm #


Prompt delivery. Waiting for weather conditions to improve to use product.

June 1, 2016

Terry McClure @ 10:26 am #

Can this product be put on horses to keep the horse flies from biting them?

June 4, 2016

Lindy Carter @ 10:55 am #


Very good product. Easy to use and so far has worked as advertised.

June 6, 2016

Ronald Mizell @ 5:40 pm #


Super fast shipping ! Added to my favorites. Really good packaging. And above all friendly.

June 8, 2016

Ryan Morris @ 4:03 pm #

I have wasps that are attracted to my children’s wooden swing set/jungle gym. Is this a safe product for this type of application seeing that my youngest WILL put his hands in his mouth after touching the wood? Thank You for taking the time to read my comment.

June 9, 2016
June 8, 2016

Robin Vasichek @ 8:15 pm #


Works A-OK! This stuff works very well. Good packing and fast shipping too.

July 1, 2016

Cheryl S. @ 6:19 pm #


WOW’d – Great Stuff! OH MY!!! I am WOW’d by this product! I diluted it with water and put it in a pump-sprayer. I sprayed my entire house. (even though the wasps were only by my garage) I did it in the evening when the mud daubers are not active, and by the next day….I saw one wasp kinda look around and then he flew off…..I haven’t seen them since. I was not expecting it to work soooo quickly, but it did. Now, I will do it again in 30 days whether I see more wasps or not, and then do it again 30 days later, I’m hoping I should be good till next spring. I combined 2 gal of water with 2 oz of viper cypermethrin into the pump sprayer. I put it on pretty heavy around garage area….and normally everwhere else. I have a fairly large house, so the nex! t treatment I will just do 1gal to 1oz. My recommendation is to start out with 1gal to 1oz and see if you need to mix more. Definitely buy this if you have a problem with Mudd dauber wasps.

August 1, 2016

Maureen Nichols @ 7:14 pm #


Finally!! I have had a problem with Cicada Killers in my backyard for about 5 years. This year I decided to try something new to get rid of them. I get up at the crack of dawn everyday, before the bees are moving about and spray this inside each new nest. I have had great success as there has been a female in each nest. Once I fill the hole, the bee crawls out and I stomp on it. Hoping for it it continue to work. Now, to find something to get rid of the males that are flying about.

August 5, 2016

Dave Kaufman @ 3:36 pm #


I could not trap the carpenter bees and after just 1 use they disappeared.

August 21, 2016

Karen @ 6:36 am #


Good product. This product worked really good. It took care of our cicada wasps.

August 23, 2016

richard @ 2:18 pm #

My hummingbirds can’t feed at their feeders since honeybees found them. What can I use that will repel the bees without killing them but also not drive off the hummers? Thanks very much.

August 24, 2016
August 28, 2016

Rea Bohnsack @ 7:29 am #


This stuff is great. We use this every year along with spreader sticker for boxelder bugs. I watch so when they start to hatch I spray a couple times a day until I don’t see any more. Its so nice not to have those pesky bugs all over the buildings. I recommend this to everybody.

September 18, 2016

Gary @ 5:22 am #

It’s stink bug season. For several years we have been spraying a mix of dish detergent and water directly on bugs. It kills them but has no deterrent effect. Our goal is to prevent Fall swarming and late Fall nesting.

What is the best product and application? — Thx

September 27, 2016

Gaylord Smart @ 4:24 pm #

I’ve used Viper before in my home for German roaches and it broke their backs!! I’ve never seen anything like it!! I’m back in my home now so can I use it in a chest of drawers where clothing will be stored later? In kitchen cabinets, can goods, dishes, counter tops, etc?? How long should I wait before use after application?? Thanks!!

September 28, 2016
October 17, 2016

Earnest Klaus @ 10:03 am #

Looking for fire ant control, for about two acres, can this be used for this? We spot treat the mounds but with no real headway.

Abbie @ 12:24 pm #

Hi, I have major stink bug issues all over my front porch & really all over the side(s) of my house for that matter. Their driving me insane, they really come out on warm days. From what I’ve read they live under the vinyl siding. I want to buy the above spray. How do I spray to kill the ones that are living under the siding? Or should I just spray on warm days when their out? I have thousands and thousands of them.

Thanks you for your HELP!

October 20, 2016

Jola Harvel @ 8:17 am #


We had an infestation on our Black Locust of twig bores. We killed them with PT-Cykick. We’re waiting until spring to spray the tree with this to keep the parent moths away and kill any eggs they lay.

November 30, 2016

Laminda Roberts @ 12:16 pm #

Hello, I have a major major major roach problem I have been calling bug man after bug man and they want too much to treat. I got some viper from a friend of mine. Bugs are dying, so how long do I need to wait before I can use my kitchen cabinets again? I just read about the gel, and honestly I have never seen them this bad before in my life. I sprayed so much that i left a puddle in places. So live ones will wall through it. I haven’t done the bottom cabinets yet. So just needing a time frame to clean up dead bugs and put my dishes back.

March 18, 2017

Richard Harrisom @ 12:39 pm #

I have a number of black pines that have been effected with Eastern Pine Boror Beetles. I lost some but others seem to be holding on. I was told that the pines should be sprayed a few times a year to control any further infestation. Which product should I be using to accomplish this?

Thanks, Rich

April 18, 2017

Rebecca S. @ 6:46 am #


I know it works. I’ve been using Viper since I moved to the mountains in 2009. We have lots of different insects and bees here, and it works on all of them. I’ve sold my neighbors on this product too.

June 27, 2017

Rea Bohnsack @ 7:14 am #


The best stuff! This is the only thing I have found that kills box elder bugs. It works great. I mix it with spreader sticker & keep some in my sprayer all the time so when I need to wipe out any kind of bugs I’m ready.

July 22, 2017

Maureen Nichols @ 6:26 am #


It works! I have used this product for a few years to help get rid of Cicada Killers that seem to enjoy nesting in my yard. I go out early morning and evening and fill the holes. As long as I use this to get rid of the females, I don’t have as many males flying in the yard. I had no problem with placing the order or receiving the product.

July 27, 2017

Donna Coldsmith @ 7:33 pm #


So far, so good! I had a LOT of cicada killers for the second year. Ruining my lawn. I poured this in the holes. I saw a few for a couple of days but haven’t seen any for about a week. The holes don’t seem active anymore so I’m crossing my fingers this worked!

August 2, 2017

Gary L. @ 6:25 am #


My vinyl siding is a light cream color and I was afraid of staining the siding. Absolutely no stains. The spiders were crawling out everywhere and were dead in seconds. Great product!

October 4, 2017

Patricia @ 10:50 am #


Order was delivered sooner then expected, just in time for STINK BUG invasion! Not so sure it was going to work since the words stink bug not on the kill list on back of bottle. Surprise, only after the product dried did it take to working. Ordered 2 bottles and it mixed enough for 2 story house around the windows. Seems a little pricey but don’t care if it works. We are not totally bug free but seems better then if we have done nothing. We live right in their breeding grounds 60 acres of hay field, garden and woods. I am sure we will be purchasing more if needed.

October 16, 2017

Eric Mocsari @ 4:11 pm #


Both products are destroying a Box Elder infestation of my daughters home. I have used these products before on my home years ago with the same results. Highly recommended!!

October 23, 2017

David Ludwig @ 7:28 am #


Best deal for sprays. Having bought and used bug sprays over the last several years, the dealers have been the best I’ve found. They are always ready to help with any info or needed sprays they sell.

February 2, 2018

J. Vale @ 8:08 pm #

I have a huge problem with cluster flies. There are hundreds of them that plague the family throughout the winter months. Since they lay their eggs in damp grassy areas, would it be a good idea to spray VIPER CYPERMETHRIN on the grass? We have a 1/2 acre, but if that works, we would be willing to do it. We recently had a newborn and we worry about these insects. Thank you in advance.

February 3, 2018
March 13, 2018

Thomas Brant @ 9:11 am #


I’ve found that applying the combination of Viper Cypermethrin and the spreader sticker to the cicada wasp mounds per your instructions has been a very effective way of dealing with those pests.

April 1, 2018

Gary Enlow @ 2:12 pm #


The recommendation of Viper plus Sticker-Spreader has worked great so far on my BB problem. There was a good initial knock-down as well as a good residual effect so far on the “Boxy Bugs”.

April 21, 2018

April torres @ 6:46 pm #

Is this a safe product to spray on a kids play set? The wasps land on the play set to eat the wood for their nest. They don’t build their nest on the play set they just land on it and leave. My kids are so scared to play on it now. Would this product also keep the wasps from landing on the playset?

June 3, 2018

Ellen Anderson @ 6:33 am #


This product is easy to use, just follow the instructions to mix in your sprayer and spray where it is needed. It worked very well in our combat of these elm seed beetles. I am so very glad that I came across it cause nothing else I tried worked on these creatures.

June 5, 2018

Amanda Dunmire @ 6:56 pm #

We have a cow pasture next to our house. The hundreds of flies lay on my house’s siding and pool all evening to catch the sun. Will this work to spray directly on my siding? If so, how long will it be effective?

June 6, 2018
June 30, 2018

Shoregurl @ 2:04 pm #


Excellent product. I had carpenter bees every year on ornamental bushes right next to our front windows and walkway..very annoying. I have tried for years and no luck to make them go away. This product worked on first application. Easy to use and assemble. I am happy to give this product five star review.

July 12, 2018

David Shanahan @ 9:15 am #


Seems to be a good product.

July 16, 2018

Rudolph @ 5:49 pm #

Ok- I have little black beetles that have infested my pine tree rows. Felled one 30’ and want to save the remaining. Is this product safe for me to apply in a sprayer that can reach that high?

August 8, 2018

Frank Cioffi @ 6:45 am #


Works Great! Had a infected tall pine, took it down and treated the other pines.

August 16, 2018

LEONARD MAX @ 3:03 pm #

Does this product prevent mud dubbers from forming?

September 17, 2018

Allyson @ 3:18 pm #

Does this work to repel rodents at all?

October 1, 2018

Emily Jones @ 7:36 am #


Review Title: Boxelder bugs
We were infested! Knock down was immediate. Hoping it keeps them out of the house and garage this winter.

April 23, 2019

Jeff @ 7:29 pm #


We had serious paper wasp activity at the peak of our third floor porch under the eaves. We sprayed Viper through the screen onto underside of the eaves. Within two days the wasps were gone and not one wasp inside screened in porch (before using Viper, we had 45 wasps inside porch in one day). Now we can enjoy our porch! We’ve used for 35 years (formerly U-Spray It). Great employees and product line. We ordered it on a Saturday and received it Monday!

June 16, 2019

Jody Meusse @ 6:55 am #


No more flies!!! After years of dealing with cluster flies we used viper cypermethrin and the flies were gone. We initially found a few, but they were dead. Application to the house was under 30 minutes.

September 18, 2019

Sarah R. @ 3:17 pm #


We purchased Viper Cypermethrin because our mud dauber issue was out of control. We had tried every other kind of spray available. We were also using sticky traps specifically made for mud daubers, and they work, but the problem was still there. The traps only get a few of them. After spraying Viper Cypermethrin, within seconds, mud daubers were falling to the ground dead, and soon, absolutely none of them were around, anywhere! It’s been 2 weeks and we have not had to spray again. They have not come back. This is it! Stop looking for anything else! It’s quick and easy to use. Fantastic stuff!!

April 13, 2020

Jennifer B @ 7:58 am #


This product is amazing! I have been using this product to keep bugs and bees away since about 2002 I think. I love this company and this is where I go to figure out how to get rid of things. I recommend this company to all my friends.

May 29, 2020

Krystle @ 12:19 am #

We have a cutter bee problem in california but dont want 2 hurt or repel hummingbirds!

June 30, 2020

Robert Roos @ 7:16 am #


Worked great!! We live next to a large lake and we have had issues with May flies since we moved here 2 years ago. I sprayed my house and for the past month we have had very few around or in the house. They are in full swing now and we still have no issue with them on the house but to be safe, I am going to spray every month to stay ahead of them. We have also noticed that we don’t have the wasps, beetles, or fly’s that we usually deal with every summer.

October 15, 2020

Timothy Hargreaves @ 7:53 am #


Does the job! Jap beatles and stink bugs dead. Works, have used it for 20 years.

October 31, 2020

John Quinn @ 8:45 am #


Perfect Wasp Removal! I needed something for my potted Areca Palms to be able to move them. This works very quickly with no visible damage and I was able to safely move them within 24 hours. A strong petroleum odor at first quickly dissipates. Mixed in a 1-gallon tank sprayer, I used the remainder to spray the foundation of the house.

November 2, 2020

Gary Craft @ 7:38 am #


Viper spray is the best for ladybugs! This spray really works for lady bugs or any beatle. We sprayed around our windows and doors. They started dropping dead inside the house. Just incredible stuff,thank you so much!

November 4, 2020

Jerry Jackson @ 7:40 am #


Best Product Yet! The feedback and support from has resulted in the most effective product I have ever used for control/eradication of fire ants in our yard!

July 13, 2021

Bob Heinz @ 10:34 am #


This is a great universal pest control. work great and have been using for years.

November 11, 2021

Natalie @ 9:13 am #


Amazing! This stuff works!!! Incredibly easy to use. And it worked so quickly. Hundreds of ladybugs taken care of, and even when they returned to my house 2 weeks later, they didn’t survive. Will continue to use this each month to prevent further issues.

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