Sunday, July 13, 2025

Prime 5 Greatest Squirrel Poisons (2023 Overview)

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Are you searching for a squirrel poison, also referred to as a rodenticide? Nicely sit down and kick your sneakers off, you’ve come to the appropriate place.

On this At present’s Home-owner evaluate you’ll be able to anticipate to be taught:

  • Our #1 general finest squirrel poison (rodenticide)
  • What squirrel poison are
  • How squirrel poisons work
  • Easy methods to use them safely
  • And what to not do

Able to get began?

What Are the Greatest Squirrel Poisons?

Impatient to get transferring or simply desire a fast reply?

Try our abstract checklist beneath, or hold studying for a extra in-depth evaluate of squirrel poisons.

  1. Contrac Blox (our #1 decide from expertise and testing)
  2. Remaining Blox (a wonderful runner-up)
  3. Farnam Simply One Chunk II (the title says all of it)
  4. JT Eaton Bait Blocks (a reasonable different)
  5. Tomcat Rat And Mouse Pellet (good for the wintertime)

1) Contrac Blox

Contrac is one among our all time favourite rodenticides. It’s been efficiently used it many occasions over my for varied pest management technicians. It has a confirmed observe document of success inside and out of doors. The energetic ingredient is bromadiolone at 0.005%, so it’s a single feeding rodenticide. It’s our #1 high decide.

The blocks have a gap via their size to be used in bait stations the place they have to be mounted on a rod to carry them in place. You are able to do the identical factor within the bushes the place squirrels prefer to play. This bait additionally works effectively in rat bait containers, that are giant sufficient for squirrels to get out and in of.

You need to most likely change the bait each 40-60 days if it’s not eaten, extra usually throughout excessively scorching or chilly climate. It is available in an 18-lb bucket, so don’t be shy about utilizing loads of it. However don’t go away it out the place pets and kids can attain it!

As at all times, learn the label on any rodenticide earlier than utilizing it. Within the pest management business, we have now a saying, “The label is the regulation.” That is actually true because the contents of the label are mandated by the EPA in addition to varied state businesses. Utilizing it “off-label” is a prison offense.

Execs and Cons of Contrac Blox

Execs

  • Single feed
  • Simple to make use of
  • Lengthy lasting
  • Helpful inside and out of doors your own home
  • Confirmed effectiveness

2) Remaining Blox

Remaining Blox is one other of my favourite rodenticides. The energetic ingredient is brodifacoum at 0.005% so it’s a single feeding rodenticide, with a superb document inside and out of doors, in personal residences or industrial settings. It really works nice both method. It additionally is available in an 18-lb bucket so use it with a free hand. That is our runner-up.

It needs to be used at the side of bait containers, or nails excessive up in bushes. You may slide the manufactured gap within the block over the nail so the squirrels have entry to it however your pets and kids don’t. Remember to learn the entire label earlier than utilizing it. Every state has completely different restrictions on how rodenticides are allowed for use. You’re accountable for figuring out them and abiding by them.

This bait has good resistance to the climate, so that you solely have to alter it as soon as each 40-60 days. If it’s particularly scorching or chilly, or unusually humid for a number of weeks in a row, you may need to alter it extra usually.

Execs and Cons of Remaining Blox

Execs

  • Lengthy lasting
  • Very simple to make use of
  • Confirmed efficient
  • A single feed bait
  • Can be utilized in and out

3) Farnam Simply One Chunk II

Farnam Simply One Chunk (for the bromadiolone energetic ingredient at 0.005%) is so named as a result of it solely requires one chunk to take impact. That is the second model of the bait (that’s the “II”), primarily simply an improve in the way it tastes. Like the primary two on the checklist, it really works effectively both inside or outdoors.

Nevertheless, it has a few restrictions on it. First, it’s solely obtainable in 8-lb buckets. It’s annoying to need to buy a number of buckets to get the identical quantity of bait as you’d get in a bigger container. Second, it’s solely labeled to be used in and round agricultural buildings. When you use it in or round your home or enterprise (apart from a farm) you’ll be utilizing it “off-label”, setting your self up for authorized hassle if anybody catches you at it.

What you do with it when you get it’s your determination, you’ve been warned.

It has good climate resistance and solely must be modified as soon as each 40-60 days, besides throughout excessive climate. As at all times, be sure you use it with bait containers and skim the label earlier than utilizing it.

Execs and Cons of Farnam Simply One Chunk II

Execs

  • Simple to make use of
  • Single feeding
  • Confirmed effectiveness

4) JT Eaton Blocks

These bait blocks are available in a 9-lb bucket and use diphacinone t 0.005% as their energetic ingredient.

This implies it requires a number of feedings to take impact. The squirrels need to eat it, go away, then come again once more for “seconds” to get a deadly dose. The peanut butter style makes it very enticing to squirrels since they like all method of seeds and nuts.

Like the opposite bait blocks on this checklist, they arrive with a gap via them for ease of mounting in bait containers or on the edges of bushes. For squirrels, this can be a winter bait, helpful primarily between late fall and early spring when their pure meals sources are restricted. With the whole lot both lifeless or not having sprouted but, squirrels will likely be more likely to return to a tasty bait for a number of feedings.

At all times learn the label and hold it out of attain of pets and kids.

Execs and Cons of JT Eaton Blocks

Execs

  • Very tasty
  • Very simple to make use of
  • Confirmed observe document
  • Comparatively cheap

5) Tomcat Rat & Mouse Pellet

That is one other bait that makes use of diphacinone at 0.005% because the energetic ingredient, so it additionally requires a number of feedings for the squirrels to obtain a deadly dose. It is available in 10-lb bucket and is comparatively economical.

Like the opposite baits, it has good climate resistance and may be unnoticed for prolonged intervals of time. It really works inside and out of doors, and will solely be utilized in bait containers or excessive up in bushes or cabinets. It has a confirmed observe document of success.

For squirrels, you’ll want to use this in the course of the winter months, from late fall to early springtime for optimum effectiveness. With little or no else to eat, squirrels are way more vulnerable to repeat journeys again to the bait. It’s usefulness declines considerably in the course of the hotter a part of the 12 months although.

Be sure to learn the label earlier than utilizing it, and at all times hold it out of attain of pets and kids.

Execs and Cons of Tomcat Rat & Mouse Pellet

Execs

  • Very simple to make use of
  • Confirmed observe document
  • Pretty economical to make use of


What Are Squirrel Poisons?

Squirrel poisons (rodenticide) are chemical substances that kill rodents. Most rodenticides today are anticoagulants, extra generally often known as blood thinners.

They don’t really skinny the blood by the way, that’s only a widespread utilization. It’s just like the phrases dawn and sundown. Everyone knows the solar doesn’t actually rise or set, it solely seems to on account of the earth’s rotation. The time period blood thinner is used the identical method.

Under is a fast video going into what poisons really are.

An anticoagulant is any compound that doesn’t enable blood to clot or interferes with the clotting course of, often known as hemostasis. Among the earliest rodenticides have been really taken from medicines meant for use on folks. At present’s rodenticides normally have one among 4 energetic components in them.

  • Warfarin
  • Bromadiolone
  • Brodifacoum
  • Diphacinone

Let’s break down every ingredient a bit additional.

What Is The Warfarin Poison?

Warfarin was one of many first anticoagulants used to manage rodents, together with pindone, diphacinone, and clorophacinone. They have been all launched within the early 1940’s. Referred to as first era anticoagulants, they have been closely used till researchers in Scotland started noticing the rise of warfarin resistant rats. Warfarin resistance led to the rise of second era anticoagulants, which is why so many fashionable rodenticides will state on the label that they’re formulated to kill warfarin resistant rats.

Warfarin isn’t utilized in rodenticides anymore however remains to be in restricted use a medical therapy for folks. It’s one in a category of medicines often known as thromboytics (clot busters). It’s used for treating strokes, myocardial infarctions, pulmonary embolisms, disseminated intravascular coagulation (DIC) and deep vein thrombosis (DVT). All of those are doubtlessly life-threatening situations.

What’s Bromadiolone?

Bromadiolone is an anticoagulant used primarily in rodenticides to kill rats, mice, and different rodents (akin to squirrels). It was first registered to be used in America in 1980 and is an odorless powder, normally white to yellow in coloration. It really works by stopping the physique from recycling vitamin Ok, which is required to clot the blood. As soon as the animals run out of vitamin Ok they’ll take a number of days to bleed to demise, normally internally.

The antidote for bromadiolone poisoning is giant does of vitamin K1, administered intramuscularly through injection by a doctor, or orally. It’s one among a gaggle of rodenticides often known as second era rodenticides.

What’s Brodifacoum?

Brodifacoum is an anticoagulant utilized in rodenticides that have been first launched in 1978. It inhibits the physique from with the ability to recycle vitamin Ok. When the rats or squirrels run out of vitamin Ok, they die inside just a few days from inner blood loss. As with every vitamin Ok inhibitor, the antidote, examined in canines, is huge injections of vitamin K1, or giant portions taken orally. It is a second era rodenticide.

What’s Diphacinone?

Diphacinone can also be an anticoagulant that may be a vitamin Ok antagonist. Invented by Bell Labs in 1990, it’s one other second era rodenticide that forestalls the physique from recycling vitamin Ok, thus interfering with the blood clotting course of. Once more, vitamin K1 is the one antidote, however diphacinone is mostly thought of weaker than the others as a result of it’s a “a number of feeding” rodenticide.

What does single feed and a number of feed imply for poisons?

Merely put, this refers back to the variety of occasions a squirrel or different rodent has to feed on the bait for it to take impact. The one feeding baits are, in pest management jargon, “scorching” as a result of they’ll kill the critters with just one or two bites of the stuff. It would take just a few days for them to die, however as soon as they chunk into it, it’s throughout however the shouting.

A number of feed, or multi-feed, means it takes multiple feeding for the animal to die from the consequences.

Bromadiolone and brodifacoum are examples of single feed anticoagulants, whereas diphacinone is an instance of a multi-feed anticoagulant. This requirement for a number of feedings is what retains diphacinone-based rodenticides out of the highest spot. They nonetheless have their makes use of (which we’ll cowl) however not because the # 1 high decide.

Learn Extra: What’s one of the simplest ways to discourage squirrels?

Will poison really kill squirrels?

Sure, but it surely primarily is determined by what time of the 12 months it’s. Let’s clarify.

Squirrels are herbivores for essentially the most half. They usually eat seeds and related meals, so whether or not or not they eat the bait is determined by what’s obtainable within the space once you put out your bait.

Through the late spring to mid-fall, there’s a lot for them to eat, so baits gained’t be practically as enticing to them as they’re to rats and mice. Because of this, we prefer to suggest single feed rodenticides throughout this a part of the 12 months.

If a squirrel does take a chunk of the bait, we don’t need to need to rely on them coming again for a second serving to earlier than it kills them.

Through the time of 12 months from late fall to early spring, there may be little or no for them to eat. Every little thing has both died off or hasn’t sprouted sufficient for them to be happy.

Throughout this a part of the 12 months, a cheaper diphacinone-based rodenticide will likely be enticing sufficient for them to come back again to it a number of occasions. This manner you’ll be able to kill the squirrels “on a finances” so to talk.

best squirrel poisons

Are squirrel poisons protected round pets and kids?

No! Rodenticides are poisons! They’re by no means protected round pets and kids. At all times use bait containers for out of doors baiting, or mount the bait excessive off the bottom out of attain.

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