Search  for anything...

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 6,485 reviews
Condition: New
Checking for the best price...
$10.50 Why this price?
Save $7.98 was $18.48

Buy Now, Pay Later


As low as $2 / 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, Zip, Apple Pay, and Google Pay. 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 Tuesday, Aug 11
Order within 25 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: Tuesday, Aug 11

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
  • Zip Pay in 4
  • Financing through Apple Pay
  • Financing through Google Pay
Leasing options through Acima may also be available during checkout.

Learn more about financing & leasing here.

Top Amazon Reviews


  • Quality
Size: 32 oz. Style: Ready to Spray
Quality DIY product
Reviewed in the United States on July 4, 2026 by getyasum

  • 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

  • Works with a flaw
Size: 32 oz. Style: Ready to Spray
It’s good but the nozzle sprays horrible. It just goes all over and not as good as others I’ve used
Reviewed in the United States on June 28, 2026 by Isaiah t.

  • KILLS MOSQUITOS
Size: 32 oz. Style: Ready to Spray
THIS PRODUCT REALLY KEEPS THE MOSQUITOS AWAY. HIGHLY RECOMMEND.
Reviewed in the United States on June 15, 2026 by MARIBEL GARZA

  • Did not keep ants away
Size: 32 oz. Style: Ready to Spray
Did not work for me.
Reviewed in the United States on May 6, 2026 by Maria L

  • Insect killer for outside lawn and grass
Size: 32 oz. Style: Ready to Spray
Good
Reviewed in the United States on June 21, 2026 by Saieed Bin Kabir

  • Good
Size: 32 oz. Style: Ready to Spray
Works good I get it every year
Reviewed in the United States on May 29, 2026 by david pounds

  • Works great!!
Size: 32 oz. Style: Ready to Spray
Works great!
Reviewed in the United States on May 29, 2026 by Mary Taylor

Can't find a product?

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