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Best Terro Insect Repellents

Updated May 2023
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Best of the Best
Terro T300B Liquid Ant Killer, 12 Bait Stations
T300B Liquid Ant Killer, 12 Bait Stations
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Customer Favorite
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These liquid ant baits are effective and can be discreetly placed around the home.


Pack of 12 bait stations. Attracts many common household ants. Results are typically seen in just a few days. Easy to use by removing pull tab and placing bait stations near where ants are seen in the home.


These bait stations should not be used within reach of children or pets.

Best Bang for the Buck
Terro T2302-6 Spider Killer Spray
T2302-6 Spider Killer Spray
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Most Versatile
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A convenient spray that works not only on spiders, but also on a variety of other insects.


Effective on most spiders, including dangerous varieties such as black widow, hobo, and brown recluse. Effectively kills many kinds of bugs besides spiders, including ants and cockroaches. Can be directly applied, broadly applied or sprayed in cracks.


This spray smells pretty strongly.

Terro T1210 No Mess Mosquito Larvacide Pouches
T1210 No Mess Mosquito Larvacide Pouches
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Stock Up for Summertime
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Mosquito pouches that are safe around pets and people and work in water.


Pouches work in stagnant water where mosquitos breed and dissolve over time. Larvae are killed immediately. Remains effective for up to 2 months. Does not produce a lot of dust and is easy to use. Comes with 10 pouches.


This is a preventative measure, so it will not kill existing mosquitos.

Terro T1901-6 Ready to Use Indoor Carpenter Ant & Termite Killer Spray
T1901-6 Ready to Use Indoor Carpenter Ant & Termite Killer Spray
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For Wood-Infesting Pests
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An easy-to-apply spray that eliminates wood-infesting insects from your home and lasts for 4 weeks.


Effective at killing carpenter bees, carpenter ants, and termites. Aerosol spray comes with a precision straw to get into small cracks and crevices. Formula is non-staining and safe for indoor or outdoor use. Does not leave behind a strong smell.


This will not completely eliminate an active infestation of termites.

Terro T231 Flea Trap Refills
T231 Flea Trap Refills
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For Fleas and More
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These glue traps attract fleas and other pests and keep them from spreading around your home.


Great for pet owners with persistent flea issues. Effective for up to 4 weeks. This is a great option for those who want to avoid chemical interventions. Pack includes 3 glue boards. Ideal for homeowners, renters, and landlords looking to eliminate fleas for good.


These glue boards are refills and need the housing to be most effective.

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BestReviews spends thousands of hours researching, analyzing, and testing products to recommend the best picks for most consumers. We only make money if you purchase a product through our links, and all opinions about the products are our own. About BestReviews  
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We recommend these products based on an intensive research process that's designed to cut through the noise and find the top products in this space. Guided by experts, we spend hours looking into the factors that matter, to bring you these selections.

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If you've ever dealt with a bug problem at home, you understand how crucial a good insect repellent is. They are not only essential for your comfort but also for your health, since many insects can carry diseases. Terro is a well-known and trusted brand in the pest control industry. Their products range from ant killers to spider sprays and more, all formulated to eliminate the bugs that bother you.

When selecting a Terro insect repellent, consider what type of insects you're dealing with and where the infestation is. For example, ant bait stations are excellent for ants invading your kitchen, while a spider spray is ideal for clearing out the garage or attic.

Consider also the ease of application, safety features, and whether you need an indoor or outdoor solution. Regardless of your specific bug problem, Terro has a product that can help. Here's a closer look at some of the best Terro insect repellents available.


Terro – T300B Liquid Ant Killer, 12 Bait Stations

If you're facing an ant invasion, this product is an excellent choice. It comes with 12 bait stations filled with liquid ant killer designed to attract worker ants, who will take the bait back to the colony, thus eradicating the entire infestation. The bait stations are pre-filled and ready to use, providing convenience and saving time. Simply place the bait stations near areas where you've seen ant activity and wait for the product to work. They are safe to use around kids and pets, making them an excellent choice for all households.

Terro – T2302-6 Spider Killer Spray

For spider problems, Terro's Spider Killer Spray is a highly effective solution. It kills spiders (including black widow, brown recluse, and hobo spiders) on contact and provides long-lasting protection for up to 12 weeks. It also eliminates other insects such as ants, cockroaches, scorpions, ticks, silverfish, Asian lady beetles, and bedbugs. The aerosol canister makes application easy, allowing you to spray directly onto the spiders or areas of infestation. This spray is for indoor and outdoor use, providing versatility in handling your spider problems wherever they occur.

Terro – T1210 No Mess Mosquito Larvacide Pouches

When it comes to controlling mosquitoes, targeting them in their larval stage is crucial. Terro's No Mess Mosquito Larvacide Pouches do just that. The pouches are ready to use and easy to apply — simply toss one into standing water, and it starts working within minutes. It kills mosquito larvae for up to 2 months — before they can become biting adults. These pouches are perfect for water gardens, bird baths, flower pots, and anywhere else with standing water that can serve as a mosquito breeding ground.

Terro – T1901-6 Ready to Use Indoor Carpenter Ant & Termite Killer Spray

Termites and carpenter ants can cause significant structural damage if left unchecked. Terro's Carpenter Ant & Termite Killer Spray is specially formulated to deal with these damaging pests. The spray kills on contact and continues to kill for up to four weeks. The precision tube allows for easy application into cracks, crevices, and other hard-to-reach areas where these insects may hide. This ready-to-use product is ideal for indoor use, providing a line of defense against these destructive pests.

Terro – T231 Flea Trap Refills

If fleas are a problem in your home, especially if you have pets, Terro's Flea Trap Refills can provide a solution. Designed for use with Terro's flea trap (sold separately), these refills are heat activated and lure fleas into the trap where they get stuck on the sticky pad. The non-poisonous and odorless formula is safe to use around children and pets. Each pack includes three glue discs and two light bulbs, providing lasting protection against annoying fleas.

Terro – T3400 Home Insect Killer Spray

If you need a general-purpose insect killer, Terro's Home Insect Killer Spray is an excellent choice. It offers effective and long-lasting control against a wide range of common household pests such as ants, cockroaches, spiders, and more. The product features a non-staining formula, which means it won't damage fabrics, carpets, or other surfaces in your home. It can be used both indoors and outdoors, making it a versatile option for managing your pest problems. Plus, it's ready to use and comes with a convenient adjustable spray nozzle that lets you spray directly onto pests or into cracks and crevices where pests might hide.

Terro – T1812 Outdoor Liquid Ant Bait Stakes

When ants are invading your outdoor spaces, Terro's Outdoor Liquid Ant Bait Stakes are the way to go. These bait stakes are designed to attract and kill all common household ants outside before they can make their way into your home. The stakes are easy to use — just place them in the ground where ant activity has been seen, and let them do the work. The slow-kill formula allows ants to consume the bait and take it back to their colony to exterminate the entire ant population. These bait stakes are weatherproof, offering durability and lasting protection against ant invasions.

Each product in the Terro range serves a unique purpose and is designed to combat a specific pest. When choosing the best Terro insect repellent for your needs, consider the type of pest you're dealing with, the size and location of the infestation, and your preferences for application. With Terro's comprehensive range of insect repellents, you'll be well-equipped to handle any pest problem that comes your way.


Active ingredients
The effectiveness of an insect repellent largely depends on its active ingredients. Some common active ingredients in insect repellents are DEET, Picaridin, and Oil of Lemon Eucalyptus (OLE). Each of these ingredients has different effectiveness levels and potential side effects, so consider your needs and sensitivities when choosing.

Duration of protection
Not all insect repellents offer the same duration of protection. Check the product information to see how long you can expect the product to work before needing to reapply it. Keep in mind that factors like sweating, water exposure, and wiping can shorten this duration.

Application method
The method of application can affect how easy and convenient a product is to use, especially for those repellents intended for use on the human body. Sprays are quick and easy to apply but can be breathed in accidentally during application. Lotions and creams give you more control during application but can leave a residue on your hands. Electronic devices don't need to be applied to the skin, but they may not offer as robust protection as direct applications.

Safety is paramount, especially when using insect repellents on or near children. Make sure to read the product's label to verify if it's safe for children. As a rule of thumb, insect repellents containing DEET should not be used on babies under two months old, and products with OLE or PMD should not be used on children under three years old.

Packaging and size
The packaging and size of the insect repellent should be suitable for your needs. If you're going on a hiking trip, for instance, you'll want a smaller, portable size that easily fits in your backpack. For home use, a larger container might be more economical. Also, consider the type of packaging. Spray cans are lightweight and compact, while pump bottles may offer more control during application.

Residue and scent
Some insect repellents can leave a greasy residue or a strong scent on the skin or on household surfaces. Depending on your preferences, you may want to choose a product that is advertised as non-greasy, non-staining, or unscented.

Brand reputation
While not always a guarantee of quality, choosing a reputable brand can increase your chances of getting a reliable, effective product. Look for brands that have good customer reviews and a history of producing safe and effective insect repellents.

Water and sweat resistance
If you're going to be participating in water activities or expect to sweat a lot, look for an insect repellent that is water or sweat resistant. Keep in mind, though, that even water-resistant products will likely need to be reapplied more often under these conditions.


Insect repellents come in a range of prices, with some natural alternatives and electronic devices being more expensive than sprays and lotions. Consider your budget, but remember that effectiveness and safety should be your top priorities.

It's worth noting that different insect repellents may be more effective against different types of insects. For example, a product that works well against mosquitoes might not be as effective against ticks. If you're concerned about a particular type of insect, make sure the repellent you choose is known to be effective against it.

In conclusion, when choosing an insect repellent, take into account the type of insect repellent, the intended use, the active ingredients, the duration of protection, the application method, the safety considerations, the packaging and size, the residue, and the scent. Also consider the brand's reputation, the repellent's resistance to water and sweat, and the price. By weighing these factors, you can choose the best insect repellent for your needs.