When deworming pets, a large portion of people immediately turn to chemicals, under the assumption that something toxic is needed to kill parasites. Unfortunately, the chemicals are also somewhat toxic to the pets themselves, and should be avoided.

Using a natural substance, cats and dogs can be more effectively dewormed, at any age, and without risks. Diatomaceous earth is a white powder made from fossilized diatoms, a type of algae. It is a fine, abrasive powder (like baking soda) that absorbs large amounts of water. When the powder touches parasites, its microscopic, razor-like edges grate against them and dehydrate them simultaneously. This means that it will likely destroy even blood-borne parasites.

Based on our research, we suggest following the deworming regimen for 10 days. During this time, animals will usually drink more, due to the dehydrating effect of the diatomaceous earth. Only purchase food-grade diatomaceous earth. Otherwise it may contain harmful chemical impurities.

Animal Amount To Use Daily
Kitten 1/2 teaspoon
Cat 1 teaspoon
Dogs up to 50 lb. 2 teaspoons
Dogs over 50 lb. 1 Tablespoon
Horses 1/2 - 1 cup (depending on size of horse)

Standard anti-parasitic herbs may be dangerous when given to animals, and these include black walnut hulls, and cloves. For human parasite cleanses, please read 'Eliminating The Parasites That You Almost Certainly Have, and Curing Lupus'.

Alongside diatomaceous earth, pumpkin seed oil can also be safely added to food for a more powerful effect. For kittens, open a 500 mg. capsule and squeeze the oil into the food, before mixing it in well. Pumpkin seed oil is harmful to parasites, but not to pets. Increase the dosage for larger animals, and use common sense.

Diatomaceous earth quickly kills fleas. Remember that it is an all-natural, organic, and safe pesticide. You can even safely eat the stuff!  That is, in moderation, of course. To kill fleas, simply rub it into the coat of the animal, and the fleas will be dead in 20 minutes. Be sure to wash the animal within a couple of hours, because the diatomaceous earth could dry out its skin. We recommend washing your hands, because the substance is extremely drying. You may need to repeat the process if eggs remain attached to the animal.

Another option is bathing the animal in neem oil shampoo. Neem is believed to kill fleas by preventing their reproduction. We have tried Ark Natural's neem pet shampoo, and find it to be effective. There are other brands which are also likely to have the same effect. We recommend reading the ingredients carefully to beware of harmful chemicals, such as sodium lauryl sulphate.

Warning: Never use diatomaceous earth on creatures that have an exoskeleton. Fortunately, most of those are insects.

Related Articles

Purchase Diatomaceous Earth from Health Wyze

Basic Animal Care and Common Sense

Why Pets Are Good For You

Eliminating the Parasites That You Almost Certainly Have and Curing Lupus


Tonya Dunham
# Tonya Dunham 2013-05-20 10:40
I have 3 inside cats. I am at my wits end! We've purchased the DE but are not seeing results. How long does it take to kill the worms? Fleas? This is so disgusting. My daughter hasn't slept in her bed in over a month bc the cats get up there & I'm not letting her sleep in fleas & worms not to mention the other places they get on & leave worms. AGH! And I'm the bad guy bc I am ready to put them out &/or get rid of them! Please help me!
Reply | Reply with quote | Quote
Rebecca Tyers
# Remember Patience always..Rebecca Tyers 2013-08-11 15:18
I just started using DE and I think what must be noted is this, and can be a hard pill to swallow. However, it takes a long time to get infestations that are finally noticed by us in our busy lives. They didn't get the flea's, worms overnight just like controlling them or getting rid of them won't. Chemicals and poisons are just that and if you wouldn't give them to your kids then it's not wise to give to any person or animal. With that said I must say i'm extremely impressed with DE, spread it on my cats, all over my house and about 7 hours later vaccumed the main living areas leaving it under couch cushions and around baseboards etc. I must stress I vaccumed prior to agitate the fleas and suck up eggs. When I was done I emptied the container and before I dumped it looked inside and there were hundreds inside, the couldn't jump they just wriggled slowly dying, including the larvae. I do think it kills them quick in when directly submerged in it. I combed my pets today and yes they still have some but dusted them again, we have to remember the cycle has to be stopped, leave the DE where you can, be diligent at giving the cats the recommended dosage and most importantly vaccum, vaccum and vaccum. The DE that is left in the vaccum kills anything that may hatch and keep litter box very clean and use DE in there too. Honestly, these quick remedies are not always better and for most of us ya we want them off our pets and out of the house but it does take time. I used Pyrethrum spray in my room 3 days ago as a control and kept the door closed and lying in bed last night a flea jump on and off my hand as if it hadn't been touched...the poison didn't work. I used flea collars, drops and countless other things and learned the hard way when fur and skin was coming off my cats neck from the flea collars. Please stay away from that stuff.
As for human use of the DE i suffer from some type of stomach problem i've had for 20 years, take medicine to control everyday and every so often I have attacks that are so painful I end up in the hospital. I had one 2 days ago, they usually last a few days bought the DE and took it myself and within half an hour pain was gone, and now have notice I too have worms. So far DE has showed me enough proof that it works if you are patient and persistant and don't mind a little hard work. Also educate yourselves on the life cycles of the fleas and worms, knowledge is power. The worm segments contains the eggs that the flea eats, the flea becomes the host until the animal or human eats the flea and then you have the worm. It's a cycle, just break it. There is no quick fix you have to do the work. Remember 90% of flea's live off animal and in your house, furniture, carpets etc. treating both these areas at the same time is your only chance at defeating them.
Reply | Reply with quote | Quote
# FleasMARY SHUMAY 2013-09-14 05:04
I also recommend diatomaceous earth. You can find it cheaply online on ebay also. You must use food grade as anything else is used for pools and such and is poisonous to humans and animals. I suggest that the you not only use it on your animal, as flea eggs drop off of the cat or dog and one flea reproduces at an alarming rate, but in and around your home. I had a horrible infestation once and got rid of it in my house and on one of my cats. My other long haired cat I used Harts flea killer on and it killed my cat and not the fleas as someone mentioned with another product above, convulsions and then death! You have to put the diatomaceous earth down on your floors carpeting and furniture under cushions. I use a big shaker like you use for powdered sugar or garlic at a pizza place. Be careful to keep it out of yours and your pets lungs when shaking. Leave this down a few days and vacuum. Continue to try to vacuum every day and empty the bag or receptacle outside. Bath the cat in Dawn dish soap and use a flea comb. I do this with a light near holding the comb up to check and a bowl of hot water with dish soap ready to submerge the comb in to kill any flea you may find right away. You may also put a bit on dry food as fleas can also give the pet worms when they bite them. Make sure to change the litter box a lot and sprinkle some in there also. Wash bedding and anything you can in hot water or at least run through the dryer. I can tell you after loosing my pet of twelve years I would never use any commercial product again. The cat was dead and the fleas were not! I also use this in my garden for pests but you must avoid any flowering plant as it will also kill bees and we need the bees.
Reply | Reply with quote | Quote
Dominique Lehman
# Dominique Lehman 2013-12-18 17:51
So- So Sorry for your loss and your baby. The company should be sued- A petition for change can be initiated on Change.org I will sign and it helps bring awareness and puts these irresponsible, uncaring companies on the spot
Reply | Reply with quote | Quote
Marie Barck
# It Works!Marie Barck 2013-11-17 19:10
We have used this successfully in the past (in & on the pets, floors, carpets, couch cushions, mattresses, litter box) I vacuumed and promptly threw out the bags, even replaced brooms, washed bedding and stuffed animals in hot water and dried on high. Used the D.E. in combination with a few baths and a flea comb. We had little ones in the house and didn't want to use anything toxic. We keep our cats indoors now cause that was such a pain! Lots of great advice in the comments!
Reply | Reply with quote | Quote
Kathleen Scott
# Kathleen Scott 2013-11-24 19:36
I use DE in and on my dogs, horses and chickens. I also use it for ear mites. IT WORKS. Remember a flea can lay up to 50 eggs per day and that they can also lay dormant until a host is available. Be persistent.
Reply | Reply with quote | Quote
Susan Horton
# Susan Horton 2014-02-14 17:31
I mixed two teaspoons of food grade de with a little
Braggs amino flavor it. He ate half of it and will eat more
Later since he free feeds. I've seen fleas on him, but the only evidence of worms I've seen are dried ones on him, none in his stool. I'm washing his bedding and sprinkling it with Dr when dried. Same regimen with the cat.
Reply | Reply with quote | Quote
Christian Mccreery
# Fleas off!Christian Mccreery 2014-04-15 05:41
There is a product called fleas off! It is sold in capsules that you break open and sprinkle in your dogs food once daily per dog. I was skeptical but I tried this product and it works fantastic! One bottle lasts 4 months! It is sold on their website for around $20...it is an all natural product and I have not seen any adverse side effects with my dogs yet and have been using this product for 2 years now. I wish they had a product like this for cats. Diatomaceous earth is also good but I noticed the most benefits from the supplement "fleas off!"
Reply | Reply with quote | Quote
Susanna Ricci
# How do you know?Susanna Ricci 2014-04-27 22:50
I have and indoor cat (14yrs) and an indoor GS (4yrs) - do put let them out a bit but generally they are indoors. I walk my dog everyday. In the summer I take the dog to the dog park which has a river for swimming.

As far as I can tell neither the dog nor the cat have fleas. I just checked Rocky all over and I vacant see anything. Neither one scratch.

I also haven't seen any worms in their excrement though I'm not looking that much. Have started giving both a dose of organic pumpkin seed oil for worm control/prevention. Rocky loves to smell poop and pee when I walk him.

I will be giving Rocky and Granny DE because the dog has discoid lupus on the nose and although the holistic attack I've taken is working I figure the DE will only help. I also intend to take it myself for a wk twice a yr as recommended in another article on this site.

I live in Launceston, Tasmania and we don't have heart worm, there are ticks in the bush surrounding my town but I'm no where near that area. Is it possible to have flea free animals or am I missing something?
Reply | Reply with quote | Quote
Olivia Edwards
# Wonderful site, Thank youOlivia Edwards 2014-07-27 12:49
I'm so glad I found DE...I used it for the first time on my 2 dogs and 2 cats yesterday evening. It seemed to work well through the night but today the dog and the cat whom the fleas seem to bother the most are starting to dig at themselves again. My dog mostly his hind quarters and my cat well all over. Can I repeat the DE process again today?. When I took the flea comb through their fur today I didn't see as many fleas and eggs as I did yesterday. I don't feel like I have an infestation but the fleas are definitely bothering my pets.... should I reapply DE today?
Thank you for all your wonderful advice!
Reply | Reply with quote | Quote
Sharon Fenderson
# DE Tea Tree OilSharon Fenderson 2014-08-06 18:08
Just purchased DE and will see what happens! I am doing this more as a preventative especially, after my three week trip in South Africa. I don't feel anything is wrong, but after reading the informative comments, I feel it's a great preventative for humans and animals.

I have been told to be extremely careful with Tea Tree Oil around pets as it seems to not agree with them whatsoever!! I will never take that risk and can't express this enough for those who are into it for their personal use. Be careful.
Reply | Reply with quote | Quote
Lisa Smith
# Earthworks Health carrys the best DELisa Smith 2015-01-07 21:27
Earthworks Health has the best DE. Food grade and also for Pets. You should not give your animals a deworming pill, but only DE.
I ordered some and as soon as I get it, I will be giving it internally to my dogs as I saw a worm on my dogs anus. Also, she has fleas and I will be sprinkling the DE everywhere! I have mixed up a concoction of a parasite cleanse, dog food, ground chicken, with cloves, thyme and garlic powder. My dogs love it and I am hoping this deworms them while I am waiting to get the DE.
My husband and I will also consume the DE to combat any parasites we may have caught from our dogs as they sometimes sleep in the bed with us.
Ugh! I will let you know how it all goes~
Reply | Reply with quote | Quote
Angela White
# Angela White 2015-01-22 20:51
Dec 2 2014..suddenly became sick..high fever. No energy
abdominal pains etc.
went to doctors..3 and 3times different answers ..tons of meds prescribed. .which i didnt take much hate pharmaceutical meds.did urine test said infection ..had hysterectomy 1 1 /2 yrs ago doctor damage nerve ending so now have to catheter self

Now did naturopathic testing she said i have parasite crytporudium low vit minerals food allergies wheat dairy
had ova and parasite collection done nothing showed
the frustration is abdominal pain and b.m.never going enuf feeling. Bloating

Trying walnut d.e and other herbs ..been painful drained

I have problems with digesting vegs pcs endless

Will d. E help absorb good vit minerals as well as kill parasite

Last year had colonoscopy done left side showed gray on wall on bowel doc said due to herbs dead cells

Any advice

Thank Angela white
Reply | Reply with quote | Quote
Randi Miller
# I recommend DE to everyoneRandi Miller 2015-05-19 11:44
First off I would like to say, once you see a flea, you have hundreds, even thousands possibly. So don't expect the problem to go away in 20 min. Yes, it can take only 20 min for a flea to dehydrate once coming into contact with the DE, but not all of the fleas will be killed in 20 min.
That being said, this stuff is awesome! I only recently found out about it, bought it at a local hardware store (sold in fertilizer section-food grade) and sprinkled it all over my carpets, and outside on my porches and around the edges of porches. I didn't use it on my cats because I had already treated them. I brushed it down into the carpet with a broom and let it sit for an hour or so. Then I vacuumed. It took a couple of days, but we stopped seeing the fleas! I took in a couple of kittens, strays, with fleas. Their fleas died off too! I made it to this page while searching for treatment for tapeworms. I am going to try using DE for that as well.

*Bonus: I've also seen some dead spiders and other bugs that I assume is from the DE. I don't always kill spiders, but I am in TX so I have to worry about the brown recluse. :/
Reply | Reply with quote | Quote
Randi Miller
# QuestionRandi Miller 2015-05-19 11:46
When deworming, Do you mix it with their dry food to get them to eat it? Will it still work if mixed with canned food? TIA
Reply | Reply with quote | Quote
Sarah C. Corriher (H.W. Researcher)
# Sarah C. Corriher (H.W. Researcher) 2015-05-23 00:42
It would be best to mix the diatomaceous earth with wet food or a small amount of milk (for cats). It is not good for your pet to inhale the diatomaceous earth, and that could happen if you mixed it with dry food.
Reply | Reply with quote | Quote

Add comment

The Claimer: The information provided herein is intended to be a truthful and corrective alternative to the advice that is provided by physicians and other medical professionals. It is intended to diagnose, treat, cure, and prevent disease.