Search  for anything...
Ortho

Ortho Home Defense Insect Killer for Lawn & Landscape Ready-To-Spray - Hose-End Applicator, Kill Ants, Ticks, Mosquitoes, Fleas & Spiders, 32 fl. oz.

  • Based on 20,823 reviews
Condition: New
Checking for the best price...
$12.99 Why this price?
Save $5.49 was $18.48

Buy Now, Pay Later

As low as $3 / mo
  • – 4-month term
  • – No impact on credit to apply
  • – Instant approval decision
  • – Secure and straightforward checkout

Ready to go? Add this product to your cart and select a plan during checkout.

Payment plans are offered through our trusted finance partners Klarna, Affirm, Afterpay, Apple Pay, and PayTomorrow. No-credit-needed leasing options through Acima may also be available at checkout.

Learn more about financing & leasing here.

Selected Option

Free shipping on this product

FREE 30-day refund/replacement

To qualify for a full refund, items must be returned in their original, unused condition. If an item is returned in a used, damaged, or materially different state, you may be granted a partial refund.

To initiate a return, please visit our Returns Center.

View our full returns policy here.

Availability: In Stock.
Fulfilled by Amazon
Arrives Thursday, Apr 30
Order within 21 hours and 28 minutes
Available payment plans shown during checkout
Protection Plan Protect Your Purchase
Checking for protection plans...

Size: 32 oz.


Style: Ready to Spray


Features

  • LONG-LASTING INSECT CONTROL: This home defense bug spray for outdoors starts killing within minutes and keeps on killing ants, spiders (excluding black widow), and American dog ticks for 3 months
  • BUG SPRAY FOR HOME YARDS: Easily apply insect spray by connecting a garden hose to the attached sprayer
  • WHERE TO USE: Use this pest control spray on lawns, around your home perimeter, and on ornamentals, flowers, trees, shrubs and listed vegetables and fruit trees
  • OUTDOOR BUG KILLER: Kill 235 listed bugs, including ants, ticks, armyworms, mosquitoes, fleas, spiders and periodical cicadas with Ortho Home Defense Insect Killer for Lawn & Landscape Ready-To-Spray insecticide
  • BUG BARRIER COVERAGE: Ortho Home Defense Insect Killer for Lawn & Landscape provides treatment for a 5,300 sq ft lawn, 1,400 sq ft of foundation/perimeter, or across 2,700 square feet of foliage

Description

Ortho Home Defense Insect Killer for Lawn & Landscape Ready-To-Spray kills bugs outside before they come inside. This outdoor ant spray kills up to 235 kinds of listed bugs, while creating a bug barrier to stop them before they enter your home as part of a home perimeter pest control program for the DIY homeowners. Use this outdoor home defense bug spray on lawns, around your home perimeter, ornamentals, flowers, trees, shrubs, listed vegetables and fruit trees. Ideal for yards and as part of a DIY lawn care program. To apply, just use just connect the bottle to your garden hose, turn on the water, and slide the lever to "ON". The bug spray is non-staining and odor-free, starts killing outdoor insects within minutes. The Ortho home defense spray product also helps with insect prevention by protecting against ants, fleas, spiders (excluding black widow) and American dog ticks for up to 3 months. Use this flea and tick spray lawn insecticide as directed for long-lasting protection to protect homes and lawns. One 32 fl. oz. bottle of Ortho Home Defense Insect Killer for Lawn & Landscape treats up to 5,300 sq. ft. of lawn, 1,400 sq. ft. of foundation or perimeter, or across 2,700 sq. ft. of foliage including ornamentals, flowers, trees, shrubs and listed vegetables and fruit trees.

Item Form: Spray


Item Weight: 32 Ounces


Liquid Volume: 32 Fluid Ounces


Brand: Ortho


Target Species: Dog


Brand Name: Ortho


UPC: 071549017385


Global Trade Identification Number: 85


Part Number: 173810


Model Number: Home Defense


Item Type Name: 32Oz Rts Hd Insct Killer


Unit Count: 1.0 Count


Included Components: SCOTTS ORTHO ROUNDUP 0173810 32OZ Ready-to-Use Insect Killer


Manufacturer: The Scotts Company LLC


Item Form: Spray


Target Species: Dog


Item Weight: 32 Ounces


Liquid Volume: 32 Fluid Ounces


Frequently asked questions

If you place your order now, the estimated arrival date for this product is: Thursday, Apr 30

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.

  • Klarna Financing
  • Affirm Pay in 4
  • Affirm Financing
  • Afterpay Financing
  • PayTomorrow Financing
  • Financing through Apple Pay
Leasing options through Acima may also be available during checkout.

Learn more about financing & leasing here.

Similar Products

Top Amazon Reviews

    • UPDATED: Fleas are complicated. ORIG: Fleas living and prospering after 3 spaced spraying sessions
Size: 32 oz. Style: Ready to Spray
EDIT: I gave this product only 2 stars originally. But after doing research and following recommendation I managed to resolve my backyard flea problem with this product. The problem with fleas is that they sort of "hibernate" in hard shell cocoons. And its impossible to create a chemical product which is safe (non-toxic) and kills fleas in all stages: larvae, cocoon, adult. If you make such product, it would be highly toxic for humans too. With my overly simplistic approach I sprayed 3 times, but I just did nothing in between these spraying sessions. Teenage fleas hide in impenetrable cocoons and can stay there for months. They get out of their cocoons when there is a potential meal walking nearby. So I decided to combine the poison with luring the fleas out of their cocoons. I walked around the backyard, stomping and slightly jumping to cause surface vibration. Then I sprayed the yard. Now, after couple of such sessions the fleas are finally and completely gone. Summary. This poison is just a good tool. But you also need to know how to use it correctly. ORIGINAL: I have a tiny backyard closed with a fence. A few stray cats visited and left some guerrilla combatants in a form of fleas. I made sure that cats couldn't trespass anymore and decided to use this product to kill fleas. I sprayed once. No result, same amount of fleas. Sprayed second time after a week. Less fleas, but still a lot. Waited another week and sprayed the third time. Three days past, there are much less fleas, but I still caught 3 fleas jumping on me. And even a single flee is too much. I must be zero. This product definitely doesn't work. Remind you, there are no more cats. ... show more
Reviewed in the United States on October 7, 2023 by GT
    • Be gone spiders!
Size: 32 oz. Style: Ready to Spray
This has helped keep our home spider free. There is not a smell to it and it is easy to use. My husband is able to get small spaces well with the nozzle. Very happy with this product.
Reviewed in the United States on October 30, 2025 by Christy R.
    • Keeps clover mites away
Size: 32 oz. Style: Ready to Spray
In the spring and summer, my patio, driveway, and deck are always covered in red clover mites that leave a red orange stain when they are smushed. They are my biggest outdoor aggravation and they are attracted to heavily fertilized grass which we have. That is what I use this for primarily. I spray this and it keeps it under control for a while ( not sure about the 3 months though). I just sprayed this morning and will do it again in a month or two and usually a few days before we have our annual pool party or if entertaining a lot outdoors. I sprayed it last year before our party and we had no mosquitos or anything else. We also get deer and foxes and so far and have had no tick issues either. Took a star off because the connection to the hose is not a closed seal. As soon as I turn on the water and start spraying, there is spray that comes out of the connection too. Definitely wear gloves and wash your hands afterwards. ... show more
Reviewed in the United States on May 24, 2023 by Linda
    • Seems to be working.
Size: 32 oz. Style: Ready to Spray
Seems to be working.
Reviewed in the United States on January 17, 2026 by Diana Seagle
    • Good product but the spray bottle is absolutely worthless
Size: 32 oz. Style: Ready to Spray
Have used this product for many years with sprayer wand and have always seen good result. Saw the garden hose type on good discount on Prime day so I picked up a few to clear the whole yard. The product itself is not bad. Doesn't seem to leave as strong a smell as Off! brand and all the bugs seem to be gone as soon as I sprayed the yard. However, whoever designed this spray bottle should be shot, or at least fired. The weird angle of the hose connector means it is constantly leaking unless you just hold the hose. The spray travels barely 5 ft and it is all over the place, which also means it gets blown back in your face easily. They just couldn't use a conventional hose spray bottle. I ended up breaking open the neck and poured the content into an empty Off! spray bottle and got the job done. Off! bottle produces a flat jet that can reach about 15 ft out. It is comfortable to hold and easy to control the spray. I am taking off 2 stars for the poor bottle design. ... show more
Reviewed in the United States on June 28, 2021 by S. Lin
    • If You Have Dogs: Helpful For Lawn Flea And Tick Control
Size: 32 oz. Style: Ready to Spray
Fleas and ticks are rampant in the San Francisco Bay Area. We've found Ortho Home Defense Lawn & Landscape to be a helpful tool in managing fleas and ticks on our dogs. It is easy to apply via spraying through attachment on your hose. Flea Note: Fleas are frustrating pests to get rid of, as they can live for a LONG time before hatching. So frustrating! You need to maintain an ongoing spray schedule to keep these pests under control in your lawns. One spray and done doesn't work for fleas. I highly recommend this product. ... show more
Reviewed in the United States on March 24, 2025 by Mary Rae Fouts
    • Absolutely Love this brand
Size: 32 oz. Style: Ready to Spray
I have been using this spray on my yard for about 2 years now. And I can say it is by far the best. It keeps the bugs at bay and away from the property. It acts as a great barrier and I can see the difference in the part of the property I have sprayed and what has not been sprayed. It last for about 2 months before I begin to see the bugs again so although the bottle says 3 months I would suggest spraying every 2 months. ... show more
Reviewed in the United States on March 23, 2025 by Emoniq
    • The spiders went running immediately! (Many died before they got out of the yard)
Size: 32 oz. Style: Ready to Spray
Lake life lest control made easy! We live across the street from the lake, so spiders and other bugs are a given. Being in Texas, some poisonous spiders cause concern. We have been ortho customers for a while using it for spider repellent at the doors and perimeter but with this yard treatment- wow! Spiders, grasshoppers, beetles, etc all went running as were dying on their way out! By the time I rolled up the water hose, I had to sweep the carcasses off my porches! 10/10 would recommend! ... show more
Reviewed in the United States on July 29, 2021 by Natalie D.

Can't find a product?

Find it on Amazon first, then paste the link below.
Checking for best price...