Natural Pesticides For Ants, Cockroaches and Garden Pests

Natural Pesticides For Ants, Cockroaches and Garden Pests

Robert CassarFree, Gardening and Sprouting, Home and Living, Intermediate Leave a Comment

I am going to show you how I use and make several types of “Potent Chemical Free, Homemade Natural Pesticides, Insecticides and Rodenticides” for eradicating ants, bugs and small pests such as mice and rats.

I will be using a variety of over the counter powerful ingredients, completely natural and not made up of synthetic poisons or chemicals. These compounds are considered safe to use in the house or in the yard.


The main ingredients are what make these recipes turn into potent natural pesticides for many types of insects and rodents, in and around your house. I will be using either Borax Powder, Boric Acid or Oxalic Acid Powder for the natural, poisonous recipes. Many of the more natural pesticide products and companies use these compounds mixed into their recipes of poisons to eradicate a variety of bugs and small rodents like mice and rats

Reading the full description is important to understand the basics and precautions to using these homemade insecticides, pesticides and rodenticides.

In most of our chemical free pesticide recipes, we will use sugar to disguise the bitter taste of nature’s poisons. The sweet taste in the recipe is necessary for the insects and rodents to eat the bait.

“A spoonful of sugar” makes the bitter poisons taste good to the bugs 🙂 They won’t eat the natural poison by itself, so we make sure it tastes good for them, tricking them into eating it and hopefully bringing the bait back to their friends to eat as well.

Borax has many uses, from an excellent household cleaning product to a laundry detergent booster.

For the many uses of Borax, read: 25 Unexpected Uses for Borax Around the House


Borax, also known as sodium borate, sodium tetraborate, or disodium tetraborate. Borax is an important boron compound, a necessary mineral in plants and the animal kingdom and is a salt of boric acid. Sodium tetraborate is not known to be toxic in the literature.

Milliard Borax Powder
Milliard Borax Powder

Borax has a pH around 9.5 which is very alkaline, so be careful not to get the fine dust into your eyes and on the skin if it has not been diluted.

It has many uses, and is commonly sold as a cleaning and laundry aid for household, as well as industrial use. Borax is also highly recommended as a relatively safe method of insect control. It can be used indoors or outside, but must be reapplied if it gets wet – src: Borax as an Insect Repellent | Home Guides | SF Gate

Borax, also known as sodium borate, sodium tetraborate, or disodium tetraborate, is an important boron compound, a mineral, and a salt of boric acid. Powdered borax is white, consisting of soft colorless crystals that dissolve in water – src: Borax – Wikipedia

Borax contains sodium thus the name “sodium tetraborate”. This is why Borax can be a good weed killer as well, because the sodium and high pH content burns or kills the weeds. Just sprinkle the Borax on the tops of weeds, or add 1 cup of borax to a gallon of warm water and then spray on the weeds to kill them.

If you want to add Boron and only Boron to whatever you’re doing, then boric acid is by far the best choice. It only contains Boron, Oxygen and Hydrogen.

Borax contains two Sodium (Na) molecules and accounts for 12% of the molecular weight.

Sodium increases the salinity of soil and water, and may be a problem for many plants to thrive or live. This in turn affects the nearby plants and wildlife if there is runoff from rain.

It is also a big concern for farmers. Boron is an essential micronutrient for plants and they add it to their soil while plowing and also as a foliar spray. Being able to do this without Sodium is essential when using directly on the plants. The sodium in Borax will burn or kill the plants if you spray directly onto plants.

So, when using a natural pesticide outdoors on top of plants it is always better to use boric acid as it does not have sodium, and won’t harm the plants. Again, the sodium in the Borax will burn or kill the plants.

Borax isn’t just toxic to insects. It can be harmful to both people and pets. … Borax can be absorbed through broken skin. Less than 5 grams can kill a pet or child, according to Dr. Angela Damant, D.V.M. The estimated lethal dose for humans is 15 to 20 grams – src: How Toxic Is Borax to Cats? | Cuteness

What Is The Difference Between Borax And Boric Acid?

Borax and boric acid are not the same compound; borax is a salt of boric acid. The less common chemical names of the substances make it clear that these are two entirely different chemical compounds; Borax is sodium borate, while Boric acid is hydrogen borate – src: How is Borax different from Boric acid? – Quora

Read More: Borax conspiracy article

Boric Acid

Boric Acid is a natural pesticide and is a great way to treat and protect wood from termites, and to kill termites in the wood that are already there. Boric acid has two powerful weapons in its armor against termites.

Firstly, Boric acid itself is lethal to termites in the same way as it is to ants and all small insects. When the termites start to gnaw or eat the wood, they ingest the Boric acid and it kills them.

The second is not so obvious. Termites have a unique ability to break down cellulose, the main structures of wood. The Termites have delicate microbes and cellulose eating bacteria in their gut and digestive tract, so the Boric acid destroys their inner intestinal terrain, – thus making the termites not able to digest the wood they use for their food.

Group of the small termite on decaying timber
Group of the small termite on decaying timber

Due to Boric acid’s antibacterial properties, it destroys this cellulose digestive process, removing the termites energy source which eventually kills them.

Some termites in Africa first break down the wood into a fungus before consuming it. The anti-fungal properties of Boric acid also stop the digestive process immediately in its tracks.

In part 2; I make a very effective Termite Pesticide with all natural ingredients.

Indoor And Outdoor Applications of Borax and Boric Acid For Pest Control

The main ingredient to the indoor natural pesticide recipe is Borax powder. I have used these termite recipes for many years, and usually one application will stop the wood eating creatures in their tracts.

For outdoor pesticide applications on plants only, use Boric acid. I only use “Boric acid” because there is “zero” sodium content in Boric acid and the salt will kill plants.

Boric acid is known for being safe and effective pesticides, and an excellent fertilizer adding the mineral Boron to your garden.

Boric acid costs much more than Borax, so I like to use the cheap common Borax powder in my recipes for indoor pests like cockroaches, ants and bugs.

In my garden and directly on my plants, I will use only Boric acid because the plants love the extra boron that is found in boric acid.

Remember, Boric acid is completely void of sodium, so it will NOT kill my plants, as the salt in Borax will kill the bugs and the plants. The sodium will burn the plants if used on them, which is why Borax makes a great weed killer as well.

These two substances are often used to help with pest infestations inside homes, and are considered natural ways to get rid of bugs. Some people will use small amounts in their garden, but if you do, don’t make the mistake and use too much borax because the salt content could burn or kill your plants you use them on.

Most farmers will only use Boric acid on their plants for a natural pesticide, and it’s a good fertilizer to get the essential ingredient Boron mineral, that is necessary for strong plants.

There’s much more “Boron” in Boric Acid than Borax!

When considering the compounds themselves, boric acid has a slightly larger concentration of boron. Boric acid has 17.48% ( and Borax has 11.34% (

Read More: Six reasons why Boric acid is better than Borax

If you are going to use this natural pesticide on your plants it is much better to use Boric acid.

Oxalic Acid

In order to really learn about Oxalic Acid, I have listed several articles below for you to read further into this poisonous compound. Since it is found in our foods we as humans like to eat such as many types of vegetables, greens, seeds and fruits which are loaded with oxalates or oxalic acid.

This compound binds to calcium in the intestines, or in our blood, and can cause kidney stones, oxalate poisoning to organs and many other sicknesses and diseases both in humans and in animals, if eaten frequently.

Oxalic acid is found in many plants and is a potent poison for insects, small rodents, birds and animals. This compound is one of the defenses of the plants to deter parasites, or other invaders from eating them.

I will link a few videos for further research on oxalates below since learning about this subject is very important. These compounds are potent poisons in plants that are the internal defense mechanisms to fight off invasions of insects.

If you are a vegetarian or vegan, especially a raw food vegan, then you better learn about oxalates. I am going to use concentrated Oxalic acid to kill insects and small rodents. This compound can accumulate in us causing the person to have kidney stones, gallstones, arthritis, muscle soreness, organ damage, skin problems, IBS, bleeding stools, bloating, gas, diarrhea and many more physiological problems.

Oxalate Poisoning

Oxalates are toxic poison contained in plants to both insects and mammals. Oxalate toxicity is the dose, or the amount, that one consumes is what kills the creature. Plants produce their own internal pesticides themselves to protect against pests like bugs, insects, mammals and humans.

Calcium Oxalate Food Poisoning is caused by the Calcium oxalates crystals that are in the shapes of sharp needles, sharp clusters or crystal sands. When they exist in needle shape, they penetrate the skin and mucous membranes more readily and cause irritation. A wild plant elephant ears (Giant Alocasia) is known to contain calcium oxalate raphides.

Calcium Oxalate Food Poisoning – Centre for Food Safety

I am passionate about this “Oxalate” compound because I poisoned myself by eating and drinking to much of this compound for 15 years, being a raw vegetarian, vegan, eggs, butter. High levels of oxalates and other phytoalexins are plant compounds that kill bugs produced by the plant for protection.

I just want to point out that we are using this poisonous oxalic acid compound for killing bugs and rats.

Vegan and Vegetarian diets have large quantities of Oxalic Acid poison.

Only because we didn’t know that this compound is a very potent pesticide and is very corrosive to produce oxalate crystals that can find their way into any area of the body.

Oxalate Crystals Magnified – Notice the very sharp crystal formations. These crystals are the cause of many unknown illnesses in humans and animals, if they eat too much of this toxic compound in their diet.

Microscopic Oxalate Raphide Crystals - Shaped Like Tiny Needles
Microscopic Oxalate Raphide Crystals – Shaped Like Tiny Needles

These oxalic acid and crystals that are combined usually with calcium, thus the name “Calcium Oxalate Crystals”, or just the oxalic acid enter the body and can cause death in small insects and rodents, even in small quantities.

That is why I have added oxalic acid to the recipes if you want to have the pesticide more potent.

Make sure you keep these compounds away from birds, animals, dogs, cats because this recipe can make a larger animal sick or possibly kill it. So, be careful to use it in selected areas where other animals or children can find it.

Just because this is a natural pesticide doesn’t mean it is not potent to cause harm. Store away as you would for any insecticide or poison.

Is Oxalic Acid A Pesticide?

Oxalic acid first was registered as a pesticide in 1957 for the current bathroom disinfectant uses, as well as use in swimming pool water systems, drainage systems, sewage systems, eating establishments (to disinfect equipment and utensils), and other sites – src: Oxalic Acid – EPA Web Archive

“Oxalic acid is ubiquitous in the environment being found naturally in many plants and vegetables, as well as in honey. In the general consumer market, it is commonly known as wood bleach. As mentioned, oxalic acid was first registered as a pesticide (disinfectant/sanitizer) in 1957.” – src: EPA Okays Oxalic Acid for Varroa Mite Control

Foods High In Oxalic Acid

Leafy greens and other plant foods are very popular among the health-conscious. However, many of these foods also contain an antinutrient called oxalate (oxalic acid).

  • Foods High in Oxalate or Oxalic acid
  • Beet greens
  • Rhubarb
  • Spinach
  • Beets
  • Swiss chard
  • Endive
  • Cocoa powder
  • Kale

More items – Oxalate (Oxalic Acid): Good or Bad? – Healthline

“Oxalic acid, also called ethanedioic acid, a colourless, crystalline, toxic organic compound belonging to the family of carboxylic acids. Oxalic acid is widely used as an acid rinse in laundries, where it is effective in removing rust and ink stains because it converts most insoluble iron compounds into a soluble complex ion. For the same reason, it is the chief constituent of many commercial preparations used for removing scale from automobile radiators.” – src: The Editors of Encyclopaedia Britannica

Oxalic acid is ubiquitous in the environment being found naturally in many plants and vegetables, as well as in honey. … In the general consumer market, it is commonly known as wood bleach. As mentioned, oxalic acid was first registered as a pesticide (disinfectant/sanitizer) in 1957 – src: EPA Okays Oxalic Acid for Varroa Mite Control

Is Oxalic Acid Harmful To Humans?

Oxalic acid is toxic because of its acidic and chelating properties. It may cause burns, nausea, severe gastroenteritis and vomiting, shock and convulsions. It is especially toxic when ingested. As little as 5 to 15 grams (71 mg/kg) may be fatal to humans – src: Oxalic acid safety sheet – Ontario Beekeepers’ Association

Can Oxalic Acid Kill You?

Oxalic acid, the toxic substance that police investigators blame for the deaths of those killed in the recent milk tea poisoning in Manila, appears harmless enough in its crystalline form as it looks like sugar or salt. … Forty milligrams or less than a teaspoon will kill a adult; a pinch could kill a child – src: Cleaning agent oxalic acid looks like sugar, kills quickly

Read More:

Natural Homemade Insecticides

Natural Ant Pesticide Recipe

Kills all types of insects including termites, ants, cockroaches that will eat the liquid sugar and natural poison recipe.

  • Add ¼ cup Borax and ¼ cup sugar (use a 1 to 1 ratio Borax to Sugar)
  • Add 8-16 oz of warm water to help melt the ingredients. The more water you add the less concentrated the killing power is.
  • Use a spray bottle directly in the crevices, behind the cabinets and floors where the ants or bugs are. Fill up a small bottle cap or soaked cotton balls in a small container and hide it where the insects and ants are a problem.

You can replace the Borax for Boric Acid if you want a more potent poison for termite infestation.

Cotton Balls with Ant Poison
Cotton Balls with Ant Poison

Soak cotton swabs, paper towels or cardboard in a dish with the Borax and sugar solution for the ants to eat.

Splenda, Equal, Nutrasweet and Aspartame are all artificial sweeteners and yes, they will kill the ants. These fake sugars kill the ants because of the neurotoxin these fake sugars contain.

The ants will not eat the artificial sweetener unless you mix it with “real” sugar water, or in a few tablespoons of milk in a bowl. Humans and animals should stay away from any of these artificial sweeteners, since they are said to be neurotoxic and cause other health issues.

Artificial Sweeteners Small Packs Bundle
Artificial Sweeteners Small Packs Bundle

Read more: The Deadly Neurotoxin Nearly EVERYONE Uses Daily

Soap and Oil Spray Insecticide

This is a very simple and effective insecticide recipe when your plants have devastating types of bugs in your garden, or on your plants such as aphids, mites, spiders, small beetles and other small bugs that tend to eat or infect your plants.


Add 2-3 Tbsp’s of vegetable oil to 32 oz of warm water combined with ½-1 tsp of mild hand washing detergent, such as Dr. Bronners.

Shake well before using in a hand sprayer, and then spray on the leaves and stems in the early morning or evening time – not in the hot sun or rain.

When sprayed on the insects and eggs; the soap and oil coats the bodies of the insects and their eggs and suffocates them by blocking their pores so they cannot breathe. Many insects breathe through their bodies and the soap and oil suffocate them quickly.

This is a very effective and non-toxic, non-chemical invasive way to rid yourself of garden insects.

Optional: To add more killing power to this recipe you can use either Garlic or Neem Oil.

Garlic Oil – Add 2 cloves of squeezed garlic. This will help deter other insects waiting to come and hang out and feast on your plants.

Neem Oil – Add 1-2 tsp of Neem oil to your existing recipe. The Neem is a very powerful insecticide capable of disrupting the life cycles of insects in all stages. Egg, larva and adult stages are affected with the Neem oil.

“Neem oil kills or repels many harmful insects and mites, including aphids, whiteflies, snails, nematodes, mealybugs, cabbage worms, gnats, moths, cockroaches, flies, termites, mosquitoes, and scale. It kills some bugs outright, attacks the larvae of others, and repels plant munchers with its bitter taste.”

Warning! When using Neem oil, understand that any insect – butterflies – crickets – bees – grasshoppers- bugs of any type will die from ingesting the Neem poison. So, be very selective and careful not to use in areas where you have beneficial insects you do not want to kill or disturb.

Mineral Oil and Soap

Mineral Oil and soap also works very effectively for eradicating insects and mold infestation to your plants. Add 2-4 Tbsp’s of Mineral oil to 1 tsp of mild liquid soap in 32 oz of tap water.

This organic pesticide works well for dehydrating insects and their eggs. I have found if you have fire ants this solution is good to spray round the year, to effectively control the destructive colonies.

Diatomaceous Earth

Diatomaceous Earth (aka Fossil Shell Flour) are excellent non-toxic pesticides to use in your house.

Diatomaceous Earth (DE) is made from ancient, fossilized single-cell algae made largely of silica. These silica deposits are mined from areas like river banks and then dried. Diatomaceous earth has a wide variety of uses but to the average person the most common use is pest control.

What makes diatomaceous earth uniquely useful for killing insects are two key properties.

DE absorbs lipid structures. Many insects have a waxy outer coat to their exoskeleton which helps them maintain moisture in their body. When insects come into contact with diatomaceous earth, that waxy layer gets eroded and most bugs die of dehydration over the span of days to 2 weeks.

DE is sharp and are jagged structures. These fossilized remains are not smooth or rounded. At a microscopic level, they’re full of sharp, jagged edges that makes it easy to latch into insect exoskeletons that it comes in contact with. DE causes the exoskeleton to break down as the tiny sharp shrouds erode and irritate the insect to rub itself, thus breaking the exoskeleton down. The bugs will also transfer the DE to other bugs by contact and rubbing against them.

You can sprinkle DE powder on the back of your cabinets, rugs, pillows, beds, sofas, dog couches etc. to eradicate insects and their eggs. Try not to produce too much dust in the air when applying.

Be extremely careful not to breathe in the fine dust particles because they can cause respiratory problems. Using a mask works well when working with DE fine particles.

Killing Fleas And Their Eggs With Borax for Dogs and Cats

Borax is also used for killing fleas, bed bugs and chiggers, making them severely dehydrated when they come in contact with the substance. Borax powder can be sprinkled on carpets, let sit for a few days to kill fleas and their larva. Then just vacuum the carpet, mattress or upholstery to clean up.

Dog takes a bath at hot summer day
Dog takes a bath at hot summer day

After your dog or cat has been in the solution for 10-20 minutes this will kill the fleas, eggs, bad fur smell, fungus, mold, ticks and other insects. Wash and then comb them with a flea comb to see if you can find any live ones.

I use ¼-½ cup borax and ¼-½ cup of sodium bicarbonate in several gallons of warm water, when washing my dogs to sanitize the skin, remove odors, killing the fleas, bugs, ticks and eggs on their entire body. Make sure they do not drink any of the borax water, since this may give them intestinal disturbances or sickness.

I like to massage the animal, and clean the skin and hair with a little bit of Dr. Bronners Soap while they are soaking in the bath for 15-20 minutes. Massage the soap and bath water solution into the skin thoroughly and when you are finished with the therapy, rinse the skin. Then, I like to put a little coconut oil in my hands and rub it into their entire body including the pads of the feet. This will help protect their skin from dryness, and support the healing of dander or skin shedding.

You should have a lot of new information to add to your natural lifestyle. Always, be careful when using any pesticide whether it is a synthetic chemical or natural pesticide.

In Part 2 – the description will be private because of the sensitivity of making a Natural Pesticide recipe for the public.

Words of Caution:

Just because these recipes are all natural doesn’t mean they are still not dangerous and should be used with care. Always keep out of reach of children and add a label to the spray bottle of the recipe made, so other people in your household will know that this mixture is dangerous if used, or if swallowed.

These recipes are very potent to insects, bugs, rodents and anything that will eat the bait may be harmed or killed.

So, be very careful when using the recipes whether natural or chemically made, to use inside your home and the outdoors.

Always store the pesticide safely and labeled as a poison. Keep out of reach of children and your animals.

Products Used:

If you do not want to make the recipes yourself, you can buy an already made boric acid pesticide.

Hope you enjoy this “Natural Pesticides for Ants, Cockroaches and Garden Pests” Video Course 🙂

Dr. Robert

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Natural Pesticides For Ants, Cockroaches and Garden Pests Part 2

Natural Pesticides For Ants, Cockroaches and Garden Pests Part 3

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