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Ortho

Ortho Home Defense Backyard Mosquito & Bug Killer Ready-to-Spray, 32 oz.

  • Based on 666 reviews
Condition: New
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Availability: In Stock.
Fulfilled by Amazon
Arrives Sunday, Oct 25
Order within 11 hours and 2 minutes
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Color: Ready to Spray


Features

  • EASY TO USE: Apply this pest control outdoor bug broadcast spray product when bugs first appear by connecting the sprayer to your garden hose and spraying area you want to treat
  • MOSQUITO KILLER: Ortho Home Defense Backyard Mosquito & Bug Killer protects your backyard from listed bugs, including mosquitoes that may transmit yellow fever, dengue fever, Chikungunya, West Nile, and Zika virus
  • OUTDOOR MOSQUITO KILLER: Use this insect killer on lawns, ornamental plants, flowers, trees, shrubs, vegetables, and fruit trees, and around the home perimeter
  • LASTING CONTROL: This non-staining and odor-free bug and mosquito killer outdoor broadcast spray starts killing within minutes and also provides 3 month control of ants, fleas, American dog ticks, and spiders (excluding black widow)
  • COVERAGE: This 32 fl. oz. container of Ortho Home Defense Backyard Mosquito & Bug Killer Ready-to-Spray covers up to 5,300 sq. ft.

Description

Defend your yard with Ortho Home Defense Backyard Mosquito & Bug Killer — an outdoor mosquito control solution for DIY homeowners. Perfect for the summer insect season or anytime bugs are invading your outdoor patio and yard, this pest control broadcast spray starts killing in minutes to help provide relief from listed bugs. Kill mosquitoes, including Malaria, Northern House, and Yellow fever mosquitoes, as well as mosquitoes that may transmit Chikungunya virus, yellow fever, dengue fever, encephalitis, West Nile, and Zika Virus. The long-lasting outdoor pest control formula also gives you 3 months of bug control against ants, fleas, American dog ticks, and spiders (excluding black widow), and kills listed insects (see label for complete list of insects killed). You can apply this mosquito control spray on lawns, ornamentals, flowers, trees, and shrubs, vegetables, and fruit trees, and around the home perimeter. To apply, simply attach your garden hose to the sprayer, slide the lever to "ON", and begin spraying (see label for specific application instructions by area of use). People and pets may enter treated areas after spray has dried. This 32 fl. oz. container of Ortho Home Defense Backyard Mosquito & Bug Killer covers up to 5,300 sq. ft.

Item Form: Spray


Liquid Volume: 32 fluid ounces


Brand: Ortho


Target Species: Insects


Unit Count: 32 Fluid Ounces


Brand: Ortho


Unit Count: 32 Fluid Ounces


UPC: 071549043780


Included Components: Ortho Home Defense Backyard Mosquito and Bug Killer Ready-To-Spray, 32 oz.


Item Type Name: Ready-To-Spray


Manufacturer: The Scotts Company LLC


Model Number: 437806


Part Number: 437806


Warranty Description: Warranty


Item Form: Spray


Target Species: Insects


Liquid Volume: 32 fluid ounces


Frequently asked questions

If you place your order now, the estimated arrival date for this product is: Sunday, Oct 25

Yes, absolutely! You may return this product for a full refund within 30 days of receiving it.

To initiate a return, please visit our Returns Center.

View our full returns policy here.

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Top Amazon Reviews

    • Works best if you don't get much rain
Color: Ready to Spray
When we lived in Pembroke Pines Florida we had a lot of mosquitoes. Just sitting out by the pool in the backyard, you would get eaten all the time. I bought this thing and used it, mosquitoes disappeared for at least until it rained which usually isn't more than a couple days. We moved to Middle Caicos in the Turks and Caicos Islands and I have never seen mosquitoes quite like this. This is a place where you do not go outside without bug spray. I just about emptied a bottle of this sprayer attached to the garden hose and within 2 minutes of starting, I noticed the mosquitoes that were constantly hovering around me had disappeared. By the time I was done there was not a single mosquito in sight. It hardly ever rains here and when I say hardly, I mean maybe a sprinkle once every two months so I'm hopeful for better results that Florida. I now watch and wait to see how long this defends the yard and us against these blood sucking terrotists 🤞🏽. Will update only if/when they return in numbers ... show more
Reviewed in the United States on August 19, 2021 by Wayne W.
    • Ease of use and effective
Color: Ready to Spray
Works well on immediate areas
Reviewed in the United States on July 13, 2024 by Amazon Customer
    • Need to wait and see/best spray ever worked great
Color: Ready to Spray
Was very excited to see if this worked mainly for mosquitoes since i have so many in my yard this year. Finally got it and when I hooked up my hose and turned it on to spray, that is exactly what it did spray all over the place. The handle had a crack where the hose wemt and it was spraying all over me. I guess it was leaking the chemicals also because i only got half my yard done b4 i ran out. Luckily i got where mydogs stay most of the time. If this works ill order another one and see if it does the same. Ill give 3 stars just because of the chemical shower i got and if i order another ill give it more that time. UPDATE: Well its been 3 days and there have been not one mosquitoe on my patio where I sprayed. I am buying more to spray the rest of my yard. Will be ususing this from now on. Nothing has worked this well in a very long time. Changed to 5 stars UPDATE It still works great. This last bottle didnt spray very well and most of the water filled the bottle so im not sure how much insecticide actually got on my yard. We shall see in tbe nest few days i guess. That was a bummer and waste of money if it didnt spray out. ... show more
Reviewed in the United States on May 28, 2024 by T. Keith
    • Wrong Purchase
Color: Ready to Spray
Review Image by Thomas Mason
Ineffective!!! I accidentally purchased this bottle but decided to give it a try. The more expensive one in the photo I provided with this review works well, but do not by this one!!!
Reviewed in the United States on August 23, 2026 by Thomas Mason
    • Not sure
Color: Ready to Spray
I used this and seem to work but still seeing anets can't tell where they are coming from it's only a couple but! I don't like them
Reviewed in the United States on June 5, 2024 by stephanie smith
    • FOR MISQUITO & FLEA TREATMENT OF BACKYARD
Color: Ready to Spray
We have a mosquito fogging service monthly. However, due to watering flowers and shrubs and slight intermittent rain in the south-central region of Arkansas humid summers, we need a on hands treatment in between. I have used this application before and it helped. Unfortunately, living in a dense tree area, mosquitoes are a problem. It should help with Fleas also for roaming cats in our area and dog next door. ... show more
Reviewed in the United States on July 2, 2026 by Amazon Customer
    • Bye bye mosquitos!
Color: Ready to Spray
Sprayed the back yard two weeks ago. Wonderful results to our mosquito problem.. so far so good. I will buy again.
Reviewed in the United States on June 30, 2026 by michael
    • Not worth it
Color: Ready to Spray
I still have mosquitoes attacking me. Used this product and it was a waste of money. Don't bother buying this stuff.
Reviewed in the United States on June 7, 2026 by Kathy Guerrero

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