Harris Roach Killer

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Set Alert for Product: HARRIS Roach Killer, Liquid Spray with Odorless and Non-Staining 12-Month Extended Residual Kill Formula (Gallon) - $19.45
Price history
Price history for HARRIS Roach Killer, Liquid Spray with Odorless and Non-Staining 12-Month Extended Residual Kill Formula (Gallon)
Latest updates:
  • $19.45 - 7 August 2022
  • $17.95 - 1 August 2022
  • $19.78 - 21 July 2022
Since: 21 July 2022
  • Highest Price: $19.78 - 21 July 2022
  • Lowest Price: $17.95 - 1 August 2022
Last Amazon price update was: 11 August 2022 01:22
× Product prices and availability are accurate as of the date/time indicated and are subject to change. Any price and availability information displayed on Amazon.com (Amazon.in, Amazon.co.uk, Amazon.de, etc) at the time of purchase will apply to the purchase of this product.

Apart from being highly adaptable, roaches are classified as one of the most notorious disease vectors. This means that roaches are known to spread germs around and cause numerous diseases.

Managing a roach infestation not only makes people cringe but is also challenging since these critters are very good at hiding. They usually hide during the day in any available space, including cracks and crevices in your house walls.

This characteristic of hiding in very tight spaces makes it hard to control and manage these bugs effectively. That is why roach killer sprays are the single most efficient product for this purpose.

The spraying effect enhances their accessibility to the darkest corners where roaches hide and help terminate your roach problem.

We understand that choosing the best pick from a plethora of options can be very confusing, especially when you don’t have the time to sort through them. For that reason, this article is designed to provide you with a comprehensive Harris Roach Killer review to help you determine if this is the best pick for you.


Spoiler alert, the Harris Roach Killer offers excellent value for all users, and you can repeatedly apply it to eradicate bugs of all kinds from your surroundings. A single gallon of this product is enough to eliminate all your roach problems for a long time.

Its killing effect practically takes more than a week to weaken. This means that it not only kills the nagging crawlies but also creates a protective barrier that keeps them away.

The Harris Roach Killer comes in an easy-to-use container that features an extended trigger sprayer. This makes it even more efficient in reaching hidden spaces for maximum termination of roach nests.

Besides being wrist-friendly, this sprayer helps to cover more ground in the shortest time possible.

Furthermore, its odorless formula makes it an excellent choice for indoor and outdoor applications. For health reasons, just remember to let it dry first before occupying the treated areas.

Luckily, the formula does not stain, and you don’t have to worry about your fabrics anymore.

More importantly, the Harris Roach Killer spray is EPA-approved meaning that it’s environmentally friendly and can’t harm both humans and animals once it’s completely dry.


  • Kills roaches and other insect pests
  • Prevents future infestations
  • Odorless
  • Stainless


  • Require several sprays before seeing results

What is Harris Roach Killer Made of?

The Harris Roach Killer contains 0.03% deltamethrin as the main active ingredient and is very effective in killing bugs such as roaches. Feel free to apply it on tight spots such as cracks, crevices, and other small dark corners where roaches run to hide.

This special formula is both odorless and stainless, making it one of the best options for outdoor and indoor use and domestic and non-domestic applications. Besides being EPA-approved, make sure to follow usage instructions to avoid any hazardous outcome.

Our Harris Roach Killer review

Roaches are a big nuisance in our homes. Their pesky appearance and rustling sound make them creepier. These critters carry different kinds of disease-causing bacteria and pose a great health risk.

Since they are known to cause food poisoning and other allergies such as asthma, their control is one of the most significant aspects of household maintenance. A single sighting could mean a larger underlying infestation for swift action.

For this reason, we’ve taken our time to test out some of this top-performing roach killer spray and compiled a comprehensive Harris Roach Killer review. Note that all opinions and ratings are based on firsthand experience and reviews from other verified users.

Let’s dig in.

Scent (7.0/10)

When you think of pesticides or insecticides, the first thing that comes to mind is the horrible smell of chemicals. Yuck! Right?

From experience, the contents of Harris Roach Killer is completely odorless. We applied it indoors during testing, and it didn’t leave a choking smell during and after spraying. Therefore, we give it a 7.0 score for not leaving any lingering chemical scent.

Thickness (5.4/10)

The Harris Roach Killer spray comes ready for use. The formula is thick enough to stay active for up to a week. It’s also good to note that the thickness is consistent enough for easy spraying.

When evaluating this criterion, thickness should always complement the effectiveness of any roach killing spray. That said, our experience with the spray was fine, but since several verified users are complaining about inconsistencies relating to its effectiveness, we’ll give it a 5.4 here.

Ease of Use (7.4/10)

Killing roaches is a challenging task, especially if you have a full-blown infestation. These annoying crawlies hide in small hard to reach spaces such as cracks and crevices in the walls, furniture joints, in-between ceiling boards, among others. This tendency makes it extremely hard to manage and prevent roach infestations effectively.

Spraying was very easy now that the Harris Roach Killer container features an extended trigger spraying nozzle. This sprayer made our work much easier and helped us reach the notorious roach hideouts effortlessly, saving us a lot of stress and time.

Besides being wrist-friendly, the Harris Roach Killer is stainless and widely fabric-friendly. Therefore, removal shouldn’t be a big deal. Overall, these cumulatively bring its rating to an average of 7.4.

Effectiveness (7.0/10)

The Harris Roach Killer is a potent pesticide that successfully eradicates stubborn roach infestations and helps prevent future invasions. Its active ingredient is EPA approved and is very effective in killing roaches.

However, findings from our tests indicate that its effectiveness isn’t at par with most of its top competitors. Additionally, this product has several effectiveness issues that merit a bare 7.0 score.

Value for Money (6.0/10)

The Harris Roach Killer is an odorless, non-staining, powerful roach killer that can provide your home with continuous roach protection. The full gallon costs less than $20 and promises to give your home up to 12 months of extended residual roach killing.

Despite the concerns around its effectiveness, we give it a 6.0 when it comes to value for money. The majority of other users are generally happy with it, and so are we. Just make sure that you don’t go light when spraying roach hideouts, then leave to dry before resuming any normal activities in the sprayed areas.

Final Verdict 6.6

As you can see from the Harris Roach Killer review, this product offers a holistic approach to roach infestation management. It comes with an easy-to-use container with an extended trigger sprayer that makes it easy to reach small roach hiding areas while going easy on your hands.

Its formula is highly potent and promises to protect your household from roach infestation for a whole year. Its odorless and non-staining traits make it an excellent choice for both indoors and non-domestic usage.

The Harris Roach Killer met all of our expectations despite having a few effectiveness concerns. For that reason, we give it a final overall score of 6.6 to show that it is an above-average pick.

If you are looking for an affordable long-term roach killing spray, you should consider the Harris Roach Killer. Just remember that you will need to spray roach-infested areas after every week for better results.

[FAQ’s] Consumer Questions & Answers

Is it pet-friendly?
The Harris Roach Killer is EPA-approved, meaning that its formula is safe to use with people and animals so long as you follow its safety precautions to the latter. Just make sure that the spray is completely dry before reoccupying sprayed areas.

Is the formula non-toxic?
The Harris Roach Killer contains 0.03% deltamethrin making it very toxic. The EPA-approval shouldn’t be confused with non-toxicity because it only means that it is safe for the environment and use around people and pets so long as it completely dries before resuming activities around treated areas.

Can it be used in small spaces such as in the car?
Yes, you can use it in smaller, contained spaces such as your car so long as you follow the safety procedures. Always remember to ensure that it is 100% dry before re-entering the vehicle.

Does it kill roach eggs?
No. However, its highly potent formula protects from future roach infestations. This includes killing roaches once they hatch.

I’m worried about oriental cockroaches; how effective is the Harris Roach Killer against them?
The Harris Roach Killer protects your home from all kinds of roaches, including oriental ones. Its content is very potent and guarantees to take out their main source while killing those that come in direct contact with the spray.

6.6 Total Score

Ease of Use
Value for Money
  • Kills roaches and other insect pests
  • Prevents future infestations
  • Odorless
  • Stainless
  • Require several sprays before seeing results
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