






🕷️ Defend your domain with invisible power—because bugs don’t RSVP!
Ortho Home Defense Insect Killer offers a professional-grade, long-lasting insect barrier with up to 12 months of protection against ants, roaches, and spiders. Featuring Invisi-Shield Technology, it dries clear and odorless, making it ideal for indoor and perimeter use. The Comfort Wand applicator ensures easy, precise application without fatigue, empowering you to maintain a bug-free home effortlessly. Trusted by thousands, it targets a wide range of common household pests, delivering reliable defense for your living spaces.




























| Active Ingredients | Bifenthrin,Zeta-Cypermethrin |
| Best Sellers Rank | #271 in Patio, Lawn & Garden ( See Top 100 in Patio, Lawn & Garden ) #37 in Insect & Pest Repellent Sprays |
| Brand | Ortho |
| Customer Reviews | 4.5 out of 5 stars 57,581 Reviews |
| Item Form | Spray |
| Item Weight | 0.73 Pounds |
| Liquid Volume | 1.1 Gallons |
| Target Species | Insects |
S**.
IT WORKS VERY WELL - IF YOU USE IT CORRECTLY
This is a solid product. This is not designed for infestations or ant hills. It is a product designed to prevent entry of insects into your residence and eliminate individual insects that have entered. While this may help the odd case of colonized insects, it really is made for those solo runners that snuck in when you weren't looking. If you have an infestation or a mess, your insects are doing more than entering your house, they are living in it. Perhaps if it was sprayed around the house like the floors were being watering your floors it would work on infestations...but, PLEASE DON'T DO THAT, it wasn't designed for that use nor was that dosage tested for human/animal exposure. Consider calling an exterminator for infestations (100s+, colonies, groups of insects, etc.). And as for ant hills, either remove them, or buy poison for ant mounds. Are there ant hills in your home? That seems like a different problem. After you've taken care of cleaning things up, then protect your residence from the entry of new insects. You'll see this product is WONDERFUL FOR THE JOB. I've used it for years, one home in a very wooded, shaded area, one home in the south. Works like a charm...spraying as others have mentioned...seasonally. This product works by leaving a residue, so if what you spray it on (baseboard, perimeter of home covered in leaves in the fall, edge of home outside, etc.) is cleaned, blown away, excessively rained on...some or all of that residue will be removed...particularly overtime. Be aware of your specific situation and adjust your application frequency accordingly. IF YOU CREATE A BARRIER, THEY WILL NOT ENTER. (Read the label for all the insects covered...it's extensive.) 1. Clean up your outside and inside space a little of non-permanent items, pulling things from the perimeter (toys, anything that shouldn't be on the floor or ground basically). Eliminate debris and items in which insects hide, make webs, etc. 2. Spray the OUTSIDE perimeter and along the border of every door and window. 3. Spray the INSIDE perimeter, along the base boards, of your whole house (closets, pantries, bathrooms included). Then spray a barrier between rooms (around the door frame). Lastly, I understand the frustration that might occur if your wand or applicator never came. Exchange it with Amazon, try a spray bottle, etc. I've been using this with pets. Label says that IT MUST DRY BEFORE IT IS OK WITH PETS. Please remove them from the area while you apply. If you have a pet roach or tarantula I don't know what to tell you. All the best, and good luck with your application.
M**N
Great for DIY bug control
Great product for DIY bug control. I have used this product for many years and I look for sale prices when I can get them. This works great for along exterior window sills and along perimeter of home. Works great for crickets and other bugs and some ants. Product can/should be mixed with water or another bug product if needed. Very little smell, light yellow in color depending on the ratio mixture used, so can be used interior under cabinets and areas around doors where bugs may try to enter the home. Does not kill wasps or hornets but is a deterrent especially when mixed with a strong mint scent.
A**M
Effective, Long-Lasting, and Easy to Use
This Ortho Home Defense bundle is a game-changer for keeping homes bug-free. The spray works both indoors and around the perimeter, creating a protective barrier that keeps ants, roaches, and other pests away. It’s easy to apply, dries quickly, and the long-lasting formula means fewer treatments over time. The included refill makes it convenient and cost-effective. For anyone dealing with annoying pests, this bundle delivers strong protection and peace of mind.
G**H
Effective Pest Control with Minor Drawbacks
Ortho Home Defense Insect Killer is a reliable solution for keeping common household pests at bay. It effectively targets ants, roaches, spiders, and other listed insects, providing long-lasting protection when applied correctly. The Home Depot +4 YouTube +4 Amazon +4 ✅ Pros: Effective Pest Control: Kills a wide range of insects, including ants, roaches, spiders, fleas, ticks, scorpions, beetles, silverfish, centipedes, and millipedes. Long-Lasting Protection: Provides up to 365 days of protection on non-porous surfaces. Ease of Application: Comes with a Comfort Wand that allows for easy application without bending or pumping. Amazon Amazon +1 The Home Depot +1 ⚠️ Cons: Mixed Results on Effectiveness: Some users have reported that the product is less effective on certain pests or in specific conditions. Battery Operated Wand Issues: A few customers have experienced issues with the battery-operated spray wand, including short battery life and inconsistent spray patterns. The Home Depot +1 The Home Depot +1 💡 Tips for Best Results: Apply to Entry Points: Focus on spraying around doorways, windows, and other potential entry points to create a barrier against pests. Reapply as Needed: While the product offers long-lasting protection, reapplication may be necessary in areas with high pest activity. The Spruce +7 Ortho +7 Reddit +7 Final Verdict: Ortho Home Defense Insect Killer is a solid choice for homeowners seeking an effective and easy-to-use pest control solution. While there are some minor drawbacks, its overall performance and convenience make it a worthwhile option for maintaining a pest-free home.
J**B
This may have solved my ant problem
We enjoy a summer rental and ants seem to be a reoccurring problem each year but after two treatments, I haven’t seen a living ant in two weeks. The lesson is, continue to treat every week for two weeks then monthly and your problems are solved. Battery operated sprayer is a real plus with a directional nozzle. Highly recommended Update 7/20 As I was preparing for this week’s treatment, the sprayer stopped working and after some troubleshooting there was still no suction with plenty of battery power. I write to ortho and here’s their response; Be sure that the end of the hose is firmly attached to the cap. Push on it until a distinct “click” is heard. The “click” indicates that the hose is attached correctly. * If have a spout on the container cap that flips up, make sure it is fully flipped up so it is straight up and down and not at an angle. * If have a knob on the cap, make sure it is turned to the "ON" position. When fully in the "ON" position, you should feel the knob click into place and the arrow on the knob will point to the middle of "ON". * Make sure that the wand is open and locked into position. * Check that the nozzle at the end of the wand is turned to an open position. There are either 2 or 3 open positions and 1 or 2 off positions (depending on wand version). * There is a lock on the trigger. Make sure that the trigger lock is not in the locked position. * Occasionally, some crystallization can clog the sprayer. After disconnecting the red plug from the cap soak the spray tip/nozzle in warm soapy water. This may dislodge any crystallized matter. The sprayer tip can be readily pulled off and snapped back on after cleaning * If this is the first time you have used the wand, be sure that the plastic protection strip has been removed from the battery compartment. The batteries will not engage until the plastic strip has been removed. * Batteries have a shelf life that will last through approximately two 1.33 bottles. It is possible that the batteries need to be replaced. The unit holds either 3 or 4 Double-A (AA) batteries (depends on the wand version). Replace the old batteries with fresh ones to see if that fixes the spraying issue. * If the sprayer motor is running and all of the above troubleshooting has been completed, the sprayer may need to be re-primed. To re-prime, place the container above the wand (either holding it above or setting it on something) and spray for 30 seconds in an area where the product can safely be dispensed. All Good advice but none of that helped with my issue. I write to Amazon and they immediately offer a no fuss replacement. This is why I love Amazon- Excellent customer service and they will continue to have my business.
A**A
great
Was worried about the sprayer wand due to several other bad rtings on this product, but mine arrived perfectly and works as expected. Easy to spray, flow was good but room for improvement, easy to use, nothing was leaking, no strong odor, no discoloration on sprayed areas. Pests are gradually going away, not as many spiders coming in from outside now, not even lingering moths.
R**K
Lots of dead bugs!
My bedroom is in our finished basement, so I appreciate this product a lot! It is effective and lasts for months (I'm not exactly sure how long it lasts since I opt to reapply before I find out and start encountering live bugs). I find lots of dead bugs around the edges of the rooms which always makes me happy. I have a sensitive nose but it does not seem to have an odor so it does not bother me at all. It's safe for pets as long as it's dry.
C**M
Short term review…..Edit drop down to 3 stars
So I used this like last week to get rid of spiders by my window. They keep setting up shop there. I went back today and sprayed again, expecting them to be back. Because that’s the usual for when I spray some repellents. After it dries, their webs are back up. But it wasn’t even one spider there. And it was some big ones before(california big. Not Australia). So I didn’t fully spray. Just one area but I quickly realized no spiders so I stopped. So this is a short term review. I’m going to set a reminder in my phone to check it in 3 months. I know it is advertised to last longer. But I want to check it at 3 month intervals, to see if it’s still working. Of course if it rains, the experiment is over lol. So I’ll come back in 3 months for an update. Mid Edit: As of 09/10/23, there’s still no spiders. And there are no huge spiders around where I live. Like a tarantula, wolf, or huntsman. Not that I’ve seen at least. This is a spider repellent review. Not a flamethrower review lol. And it rained from the hurricane/tropical storm that passed recently. I guess it didn’t hit the area directly or it wasn’t enough to wash it away. So that’s good it lasted this long. I’ll come back near the end of October for one final update. But I’m already sold with it lasting over a month. 10/23/23 Final update. Still no spiders outside my window. So it works for at least 3 months, which is good for me. One thing, don’t spray it in high bug areas like outside trash cans. I sprayed my outside trash cans because I don’t like touching spider webs when taking out the trash. Next time I’ll just spray the handles or something. Because there were so many more flies in and around the trash after there were no spiders left around there to catch them. So just be mindful of that. AND, it didn’t repel the flies. So it worked for spiders, not for the house flies. Edit: 05/05/2024 I had no intentions of doing another edit. But I was so impressed I had to. I went out to spray my window again just now. And there were no spiders or other insects where I sprayed. No spider webs or anything. After rains, winds, time, and it’s living up to the claims so far of being long lasting defense. I just thought that was cool. This is the last update though. Because I sprayed it again even though it wasn’t needed. I was trying to see if a spider would come running out from where I couldn’t see it or something. lol nothing ran out. I wish it worked better for flies. But this is a must to keep handy if you deal with a lot of spiders. Oh. Side note. It hasn’t messed up my paint either. But this is a case by case basis. Do a spot check on your intended surface to test it first, if concerned. Ok. That’s all. Thank you for reading. Have a good day edit: June 1, 2024. I sprayed in the doorway because spiders kept going there. They would come every couple of weeks. I sprayed and within 2 days I saw 3 spiders right where I sprayed. Didn't phase them at all. The daddy long leg ones. Not sure why it works so well for the outside spiders and not for the long legs. But hey. If I had to choose which spiders I wanted to stay away, it's definitely the ones outside. still disappointed though.
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