10 Best Squirrel Poisons Reviewed in 2020

Squirrels are ground-dwelling rodents, but they can find their way into your house through small openings and cracks on your foundation or roof. Although these furry pests are cute, they can cause extensive damage.

If they get into your attic, they can chew on wires, destroy your wooden shed, and damage anything they come across. Squirrels pose health risks because of the parasites they harbor. The CDC found that these rodents carry over 30 conditions.

In this guide, you’ll learn everything you need to know about poisoning squirrels, the types of poisons available, and how to poison squirrels.

Pestguide's Top Pick

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Farnam Just One Bite II Bait Chunks

• Easy to use
• Eliminates rodents with just one feeding
• Weather-resistant

Farnam Just One Bite II

• Single-feeding
• Weather-resistant

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Final Blox

• Single Feeding
• Works Well And Has A Good Track Record
• Good Resistance To Weather

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Contrac Blox

• Single Feeding
• Effective and long lasting
• Available in large quantities
• Best Resistance To Weather

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JT Eaton Bait

• Multi-feeding
• Peanut butter flavor attractant

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Tomcat Bait

• Multiple feed
• Good resistance to weather

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Fastrac Blox

• Single-feeding
• Weather-resistant

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What is Squirrel Poison?

Rodenticides or squirrel poisons are chemicals meant to kill squirrels.

How Does Squirrel Poison Work?

Many of these poisons are blood thinners or what is commonly known as anticoagulants. These poisons interfere with the clotting process, which results in the rodent’s death.

New rodenticides contain Diphacinone, Brodifacoum, Bromadiolone, and Warfarin. The warfarin squirrel poison is an anticoagulant that kills rodents.  However, modern rodenticides don’t use warfarin as researchers found cases of warfarin resistance.

Bromadiolone can be white or yellow, depending on the manufacturer. It’s mainly used to kill mice, rats, and squirrels. The chemical works by preventing the body from recycling Vitamin K, which is responsible for blood clotting. If an animal suffers from a Vitamin K deficiency, it will only take a few days for it to bleed internally and die.

Brodifacoum prevents the body from recycling Vitamin K, something that leads to internal blood loss. It’s classified as a second-generation rodenticide. Diphacinone is another anticoagulant that inhibits the production of Vitamin K, which interferes with the blood clotting process.

Multiple and Single Feed Poisons

You may come across some rodenticides labeled just one bite poison for squirrels, while others could be labeled multi-feed or multiple feeds.

A one bite poison or single feed poison means that the squirrels only need to feed on the bait once for it to kill them. However, the multiple feed one requires more than a single feeding for the effects to take place.

Diphacinone is a multi-feed anticoagulant, while Brodifacoum and Bromadiolone are single feed anticoagulants.

Squirrel Poison Buyer’s Guide

Before buying any squirrel poison, it’s essential to get a poison formulated especially for killing squirrels. Although you’re likely to come across poisons that kill multiple rodents, it’s best to find one for the pest you’re dealing with.

You also need to find out what’s contained in the squirrel poison. Some have]]] anticoagulants, while others may contain zinc phosphide, which isn’t meant for home use. It’s essential to determine how long the poison takes to kill a squirrel. Some are designed for a single feed, and others require several feedings for them to be effective.

Top 10 Best Squirrel Poisons in 2019

Some of the top-rated squirrel poisons include:

JT Eaton Bait Block Rodenticide

The JT Eaton Squirrels Poison is suitable for use in your indoor and outdoors. It’s made with peanut butter, which these creatures like to eat. Moreover, being a first-generation anticoagulant means that the poison contains Diphacinone as its main ingredient.

The bait blocks have a hole in them, something that allows for simple mounting on the sides of trees or bait boxes. Place the bait in early spring and late fall. That will give the squirrels time to come back for multiple feedings.

It will take some days after feeding for the squirrel to die. You’ll love how easy it is to use, all you need is to spread the bait blocks where you spot the squirrels running around. Within a few days, you’ll see fewer squirrels around your home and yard. The best part is that you can use this poison for other animals like chipmunks.

On the downside, being a first-generation anticoagulant means that the squirrels will need to eat the baits consistently for them to die. Moreover, the poison is dangerous to children and pets.

Farnam Just One Bite Bait Chunks

If you’re looking for a minimized way to handle poison, you may want to check out the Farnam Just One Bite Bait Chunks 11 rodenticide. It contains a second-generation anticoagulant, Bromadiolone.

You only need a single dose to kill the squirrels. The second version features a better taste, and it’s weather-resistant. You only need to change it after 40 days.

However, you need to read the instructions carefully to ensure the poison is effective. Also, the poison is toxic to other animals like your pets, birds, and other mammals. Another disadvantage is that the poison comes in eight-pound buckets. That means you may have to purchase several buckets to get the amount of bait you need.

The company indicates that the Farnarm poison is only meant for use in and around agricultural buildings. That means you could get in trouble if you use it in or around the house or farm.

Contrac Blox

Contrac Blox is a rodenticide that can suffocate rodents to death. The first-acting poison has Bromadiolone as the main ingredient, which means the squirrels need a single feed for them to die.

The blocks have a hole, something that allows for use in bait stations. You can mount the block on a rod or hold them to attract the squirrels. Alternatively, you can opt for rat bait boxes as they can keep the squirrels.

It has a peanut butter aroma, which most rodents love. You can place the all-weather bait indoors or outdoors, depending on where you spot these pests.

It’s recommended to change the bait every 60 days if it’s not consumed. Change it often when it’s excessively cold or hot. The 18-lb bucket allows you to use as much poison as you need to kill the squirrels.

However, Contrac Blox is harmful to children and pets. Ensure that you store it far from their reach. Some users also found the poison expensive, while others didn’t like the fact that it’s only available in bucket size.

Tomcat Bait

If you notice that squirrels avoid the large bait chunks, the Motomco Bait offers a perfect solution. It comes in the form of pellets, something that allows them to chew and run to hide.

The first-generation anticoagulant has Diphacinone as its main ingredient. That means that the poison will only be effective after multiple feedings. Give it a few days for the rodents to disappear from your house.

You can use the pellets indoors and outdoors. The company goes ahead to package the bait in bulk, which makes it inexpensive to use to get rid of squirrels and other rodents in your home and garden.

The only disadvantage is that you require several times of feeding for the poison to be effective.

Fastrac Blox

Nothing gives you the peace of mind like eliminating rodents at one go. The Fastrac Blox Rodenticide is a single-feed rodenticide that allows you to kill squirrels in one bite.

With promethazine as its active ingredient, you don’t have to worry about the rodents taking days for them to die. Its unique design allows you to place the bait in a way that the squirrel can bite it from different edges.

Also, you can use it as a standalone bait when you bore a hole through the block. That allows you to mount the bait in the bait station. Previous users love how economical it is considering that it comes in 4-lb buckets.

Neogen Ramik Green 4 lb

The NEOGEN Rodenticide contains Brodifacoum as its active ingredient, something that makes it slow but effective poison. Squirrels will die a few days after ingesting the poison.

You’ll love how the poison comes in small packages, something that attracts squirrels, which may be ignoring large baits. What’s more, you don’t need to remove the bait as the packs can be set with their packaging.

All you need is to place the pellets along the squirrel holes or places they frequent. You can use the bait indoor and outdoor.

On the downside, the bait is dangerous and can be harmful to your children and pets.

Final Blox

Final All-Weather Blox  has Brodifacoum, which means you only need a single feeding to kill the squirrels. According to the manufacturer, you can use this single-feeding anticoagulant on the most persistent rodents.

The poison comes with a cog-like shape and has more than sixteen food-grade ingredients. That makes it irresistible to squirrels. The rodents can bite on any edge they prefer. What’s more, its red color allows for identification.

You can mount the bait in tamper-resistant bait station thanks to the hole at the center. Moreover, you’re not limited to where you can use the bait as it works for both indoors and outdoors.

On the downside, the Final all-weather Blox is expensive, which may be limiting to someone on a budget.

Ramik Green 20 lb

Available in half-inch nuggets, the Ramik  Diphacinone Rodenticide bait is the first-generation anticoagulant. That means that you’ll require several feedings for the squirrels to die.

The bait system utilizes food-processing technology to produce attractive and palatable bait that squirrels will find pleasant to chew. Moreover, the nuggets are hot extruded, which means that you can use them outdoors without worrying about the weather affecting the bait.

You can use the small size pellets on other rodents in your house. However, you need to be careful when handling this poison. Always wear gloves and read the instructions.

Kaput Ground Squirrel Poison

The Kaput Ground Squirrel Poison has Diphacinone, which is a first-generation anticoagulant. Squirrels have to eat it for a few days for them to die because of internal bleeding.

Unlike other poisons, Kaput is less toxic to people, birds, and fish. Nonetheless, you still need to use it properly. All you need is to place the poison the squirrel’s burrows to capture them. Alternatively, you can use it as a bait for squirrel traps. The product also kills fleas and other insects.

On the downside, Kaput Ground squirrel poison is toxic to non-targeted birds and wildlife.

The Giant Destroyer Gas Killer

Unlike other poisons on this list, the The Giant Destroyer Gas Killer doesn’t contain an anticoagulant. It contains sulfur, charcoal, and sodium nitrate as its ingredients. All you need is to ignite it and place the product near the squirrel’s nest.

Ensure that you cover the entrance to suffocate the pests. Manufacturers recommend plugging all holes at once for the best results. One advantage of this product is that it poses less danger to non-targeted animals. Also, you don’t have to worry about environmental contamination. It’s safe to use around your children and pets.

However, the gas may not be useful if the squirrels have a well-established tunnel system. Also, previous users found it expensive for large infestations. The product only works for ground squirrels, and not those in your attic.

Sweeney’s Mole and Gopher Poison

Available in six-packs, the Sweeney’s Mole and Gopher Poison uses flavored peanut pellets to attract squirrels and kill them. It can also help kill other rodents like chipmunks and mice.

Most users love its unique design that works well for underground squirrels. Also, it contains zinc phosphide as its active ingredient. The poison is ideal for everyday use. All you need is to place the pellets into burrows, tunnels, and underground runways to kill the rodents at the source.

Unfortunately, the product is toxic to children and other animals. Furthermore, you can’t use it for above ground squirrels as its shape is only meant for underground application.

Overall, our top pick is the JT Eaton Bait Block rodenticide. Apart from its attractive flavor, the blocks are simple to use, affordable, and have a proven track record of eliminating squirrels.