Blog > Healthy Home > 8 Common Household Chemicals Harming your Pets, & their Non-Toxic Alternatives RSS

8 Common Household Chemicals Harming your Pets, & their Non-Toxic Alternatives

Raised Garden Beds in the Eartheasy Store

Join the Eartheasy Community

Sign up for our Newsletter:

* indicates required

Are these hidden poisons harming your pets?

By Posted Mar 16, 2012

Household items unsafe for pets Pets are more vulnerable than people to exposure to toxins in and around the home. Since pets are smaller, they are closer to carpets, garage floors, lawns and restricted spaces which may harbor chemical and pesticide residues. Their natural curiosity, coupled with a lack of awareness about toxic hazards, make them more likely to encounter substances harmful to their health. Animals also have faster metabolisms and smaller lungs than we do. Their bodies have to work harder to try and eliminate these toxins. Not only are they processing these chemicals at a faster rate, they are also breathing them in more rapidly.

Most pet owners go to great lengths to care for their pets, but there are unseen health hazards to pets which are commonly overlooked, yet easily avoided. Here is a list of potentially toxic materials which may be affecting the long-term health of your pet.

1. Flea control chemicals

flea control chemicals Flea control is a challenge for most pet owners. Surveys show that as many as 50% of American families report using some kind of flea and tick control product on pets, exposing millions of pets (and children) to flea control chemicals on a daily basis.

Flea repellent products labelled as ‘natural’ may still be toxic to your pet. The chemical d’Limonene, derived from citrus peels and found in many natural anti-flea products, can be highly toxic to cats. Flea sprays and dips which contain “all natural Pyrethrin” can be toxic to some pets, and Pyrethroids , synthetic derivatives of pyrethrins, expose your pet to more chemicals.

Flea control formulations which use essential oils can be particularly hazardous to cats. Essential oils are absorbed rapidly into their skin and enter the bloodstream, and because cats do not efficiently metabolize essential oils, exposure can build to toxic levels. And while there may be no initial adverse reaction, the effects of essential oils can be cumulative and manifest themselves at a later date. Other natural ingredients known to cause allergic reactions or have toxic effects in some animals include Tea Tree (Melaleuca alternifolia) oil and Pennyroyal oil.

Pet-safe Alternatives:

  • Electric flea traps, also called ‘plug-in’ flea traps, are effective for controlling flea populations and are safe for indoor use around pets. These traps are inexpensive and easy to use.
  • Diatomaceous earth is a nontoxic substance which will control flea populations in the home, and will also kill other insect pests such as ants, roaches, sow bugs and most home insect invaders.

For homes with persistent flea control challenges, it is recommended to use electric flea traps to reduce the active flea population, followed by the application of diatomaceous earth to control emerging populations over time.

2. Lawn fertilizers

lawn fertilizing Lawn fertilizers are often combined with herbicides, commonly referred to as ‘weed n’ feed’. In a 1991 study published in The Journal of the National Cancer Institute, a link was found between the herbicide 2, 4-D and malignant lymphoma in dogs and non-Hodgkin’s lymphoma in people. According to the study, “researchers report that dogs were two times more likely to develop lymphoma if their owners sprayed or sprinkled the 2,4-D herbicide on the lawn four or more times a year. And even with just one application a season, the cancer risk was one-third higher than among dogs whose owners did not use the chemical.”

Even if you do not use chemical-based lawn fertilizers, your neighbors may. Dogs are more vulnerable than humans to lawn care chemicals since dogs run ‘barefoot’, and often roll, sniff and dig in the grass. Some dogs even eat grass occasionally.

Pet-safe Alternatives:

  • Corn gluten is a natural, nontoxic alternative to commercial ‘weed ‘n feed’ products. Corn gluten is an organic fertilizer and a pre-emergent weed killer which has become popular for use in residential lawns as well as school fields and golf courses. Exposure to corn gluten is safe for pets.
  • Awareness. Know where your pet goes when outside the home, especially in spring and fall when lawn fertilizers are applied. Wipe or wash your dog’s paws after running on lawns which may have been recently treated with fertilizers.

3. Garden herbicides and insecticides

herbicide, insecticide spraying Herbicides, insecticide baits, sprays and granules are often used in gardens without consideration of the effects these chemicals may have on pets. Slug and snail baits containing metaldehyde are toxic, and can be lethal, to dogs if ingested. Metaldehyde toxicity causes rapid onset of neurological symptoms that can be fatal if untreated. Signs of poisoning begin within one to four hours of exposure. Repeated seizures due to metaldehyde poisoning can elevate body temperature, which can lead to complications similar to those observed in pets suffering from heatstroke. Affected pets usually require hospitalization for 24 to 72 hours after metaldehyde ingestion.

Fly bait and garden insecticides often contain methomyl or carbofuran, which can cause seizures and respiratory arrest in dogs and cats. Organophosphate toxicity from garden insecticides may lead to chronic anorexia, muscle weakness and muscle twitching which may last for days or weeks. Some organophosphate insecticides commonly used include coumaphos, cyothioate, diazinon, fampfhur, fention, phosmet, and tetrachlorvinphos. These insecticides inhibit cholinesterases and acetylcholinesterase, essential enzymes which break down acetylcholine, causing seizures and shaking due to continuous nervous transmission to nervous tissue, organs and muscles.

Pet-safe Alternatives:

  • The Flies Be Gone fly trap uses nontoxic sterilized food materials as bait, and is very effective for outdoor fly control.
  • Holey Moley nontoxic mole control uses the natural ingredients Castor Oil and Fuller’s Earth to repel moles. These ingredients are safe for pets, children and the environment.
  • See our guides to Natural Slug Control and Nontoxic Garden Pest Control for nontoxic solutions to most common outdoor insect pest problems.
  • If pesticides are used, always store them in inaccessible areas—and read the manufacturer’s label carefully for proper usage and storage.

4. De-icing salts

salt for melting ice De-icing salts used to melt snow and ice pose a hazard to pets. When dogs lick their paws after having walked on surfaces treated with de-icing salts they may become sick. This limited exposure can lead to short-lived sickness such as hypersalivating, nausea and vomiting. Larger ingestions, according to the ASPCA, can lead to an increase in the blood’s electrolyte levels, weakness, lethargy, moderate irritation to the oral and gastrointestinal system, and even tremors. De-icing salts can also cause burns, cracks and skin irritations on dogs’ paw pads.

The most commonly used de-icer is rock salt (sodium chloride). This is also the least expensive de-icing salt. Other ice-melt formulations use potassium chloride, magnesium chloride, calcium carbonate or calcium magnesium acetate. These formulations are less toxic than sodium chloride but they are also more expensive.

Pet-safe Alternatives:

  • Waterproof ‘pet boots’ are recommended during winter walks on treated icy surfaces.
  • Sand, crushed cinder, or cat litter can provide traction on icy pavement, although they do not melt the ice.
  • De-icers containing calcium chloride or potassium chloride are safer for pets but they are more expensive. Calcium chloride de-icer costs about three times as much as sodium chloride de-icer. De-icers marketed as “pet friendly” are preferred for use, however prolonged exposure can still cause irritation to pets.
  • Wash off your dog’s paws with a wet towel after walking on de-icing salts.

5. Antifreeze

antifreeze Most antifreeze formulations in use today contain ethylene glycol as the principal ingredient. The sweet smell of ethylene glycol attracts animals, but it is deadly if ingested even in small amounts. As little as half a teaspoon of spilled antifreeze can kill an average-sized cat, and eight ounces can kill a 75-pound dog. Unless you catch it early, the damage to pets’ kidneys can be irreversible. Spilled or leaked antifreeze also washes into rivers and lakes, harming fish and other wildlife.

Pet owners should be aware of the potential danger of antifreeze, and keep an eye out for any small green puddles in the garage or the pavement where cars are parked. Leaks from engine coolant systems are not common, but small spills may occur when topping up the car’s coolant reservoir.

Pet-safe Alternatives:

  • Use “Low Tox” antifreeze made of propylene glycol. This is just as effective as ethylene glycol, but it is a little more expensive. The added cost is hidden – the mix ratio for ethylene glycol is 50:50 (antifreeze/water), while the propylene glycol mix is 60/40. But considering how little antifreeze car owners need to buy, the added cost is a small price to pay for safety to pets and the environment.

6. Household cleaners

household cleaners According to the EPA, 50% of all illness can be traced to indoor pollution, which can be directly related to the use of household cleaners. The National Center for Health Sciences says “… perhaps the most serious exposure is to modern household cleaners, which may contain a number of proven and suspect causes of cancer.” Cleaning products with ingredients such as bleach, ammonia, chlorine, glycol ethers or formaldehyde can put pets at risk for cancer, anemia, liver and kidney damage.

Even when the toxic cleaners are put away and closed, the vapors left behind can continue to harm both us and our pets.

Ammonia, found in oven cleaners and window cleaning formulations, is an irritant to the mucous membranes. Chlorine is a toxic respiratory irritant that can damage pets’ skin, eyes or other membranes. It can be found in all-purpose cleaners, automatic dishwashing detergents, tile scrubs, disinfecting wipes, toilet-bowl cleaners, laundry detergents and mildew removers. Chlorine is heavier than air and lands in low-lying areas where pets live. Because your pets are smaller and breathe faster than adults, they are even more vulnerable than children to toxic exposure.

Laundry Detergent residue left behind on clothes and pet blankets can be harmful to your pet, especially those that chew on their bedding. Toilet bowl cleaners may be ingested by pets who have the habit of drinking from the toilet bowl.

Pet-safe Alternatives:

  • Most home cleaning chores can be done without the need for commercial chemically-based home cleaners which may be toxic to pets. For a list of non-toxic home cleaners which you can make yourself, see our page Nontoxic Home Cleaning.
  • Nellie’s All-Natural Dishwashing Powder uses biodegradable, nontoxic ingredients to clean dishes safely and effectively.
  • Soap Nuts Laundry Liquid replaces chemical-based detergents with the natural cleaning properties of saponin, extracted from the Soapberry tree.
  • Nellie’s All-Natural Laundry Nuggets are nontoxic, biodegradable, hypoallergenic and leave no residue on clothing or bedding.

7. Formaldehyde

formladehyde Formaldehyde is present in many new home furnishings, household cleaners and some construction materials. It is considered toxic if inhaled or absorbed through the skin. According to the EPA, formaldehyde has been shown to cause cancer in animals.

Pets can inhale formaldehyde from new fabrics, wood-veneer furniture, laminated flooring, wood paneling and doors made of particleboard, plywood, and medium density fiberboard. These pressed woods are bonded with resins containing formaldehyde.

Formaldehyde emissions are highest from new pressed wood furniture, drapery and unwashed new fabrics such as upholstery fabrics, and will gradually subside over time. New furnishings which contain formaldehyde should be set outdoors for a few days to “out-gas” before bringing into the home. Rooms which contain new furniture or draperies should be well ventilated. Wash new clothing and bedding before use to remove formaldehyde-containing fabric finishes. Consider buying solid wood or used furniture.

Newer mobile homes and trailers are made using materials which contain formaldehyde, and many illnesses have been reported from occupants. The mobile homes provided by the government for victims of the Katrina hurricane sickened many people due to the off-gassing fumes.

Air purifiers are ineffective at removing gaseous pollutants and should not be used to mitigate formaldehyde off-gassing. Ventilation is the preferred option.

Pet-safe Alternatives:

  • Dog houses should be made of solid wood. Plywood and pressed wood products should be avoided, but if they are used they should be painted on both sides.
  • New dog cushions and blankets should be washed or left outdoors to off-gas for several days before letting the dog come into contact with them.
  • Dogs kept in apartments or small homes during the day should have access to fresh air. Keep a screened window open if possible.

8. Mothballs

moth balls Mothballs, when used properly, are effective at killing moths. But used carelessly, they pose a hidden health threat to pets. Inhalation of mothball vapors causes headaches, respiratory distress, eye irritation and many other symptoms. Ingestion causes toxic poisoning leading to liver damage, respiratory failure, seizures, heart arrhythmia, and the possibility of death. The ingestion of just one mothball can produce significant illness. Repeated inhalation of fumes or ingestion of a few mothballs can be fatal to cats and dogs.

Pets can be attracted to the curious smell of mothballs. This leads them to heightened exposures to which the pet owner is unaware. Ongoing exposure to mothball fumes in the home may remain undetected which results in long-term exposure for the pet.

Mothballs are impregnated with either naphthalene or paradichlorobenzene, both toxic substances. They work by releasing toxic vapors which build up within airtight spaces and kill any moths or moth larvae emerging from the clothing or other stored items. Mothballs should only be used in closed, airtight containers where the pesticide fumes are trapped. If mothballs are not kept in sealed containers, the vapors are gradually released into the room. This long term exposure can pose health concerns if the exposure is high enough.

Pet-safe Alternatives:

  • Make moth-repelling sachets using small squares of cheesecloth stuffed with juniper shavings (aromatic cedar, pencil cedar) and place them in closets, bureaus and clothes chests.
  • Buy non-toxic pheromone-based clothes moth traps.


Domestic pets may have keen senses of smell and hearing which alert them to danger, but they have no defence against the hidden dangers of chemicals in your home. As a pet owner, you will need to identify the presence of these unseen hazards and take preventive measures to ensure your pet’s long term good health.


Dog, Lawn Fertilizing, herbicide, and salt images courtesy of

Posted in Healthy Home Tags , ,
  • Lou Eller

    I have read about using lemons to make a water for spray on cats/dogs for fleas.  Lemons are toxic to cats.  I am afraid to use this.  Has anyone out there actually used this and how effective is it?  I boiled 6 lemon halves, steeped several hours (6-7) then strained and poured into spray bottles.  Does the process of boiling/straining the lemons kill the poison?  Someone, pls tell me.  I have 8 cats and don’t want to hurt any of them.  I also have a couple of dogs.  Is is safe to use on them?  If anyone out there has used this, pls blog back.  How effective is this treatment for fleas and how often can it be used?  thanks.

    • ledmunds

      I tried it not long ago before i knew that lemons were toxic…it is ineffective and leaves a sticky residue. It didn’t harm any of my animals, but it’s not worth the risk, anyway.

  • I love my pet dog and i will get lonely if something happened to him. Thank you sharing this informative post which opens my eyes on what is hash for my pet.

  • Hey!

    I dont use any of them. I think none should use them!

  • Lorene

    We’ve lost two pets, both spaniels, when they were only three years old. The vet gave no reason but I think it was something in the environment. This article is very informative, thank you!

  • Thanks for this…We like to keep our yard and lawn nice for outdoor entertaining, but often wondered  if / how the fertilizers and weed treatments impacted our spaniel. We have slowly been switching to more green solutions and will avoid using the ice melt altogether next winter. Our pets enjoy the outdoors, we need to make the yard and garden healthy for them.

  • Silicagal

    all tips and recommendations I have seen and abide by in my “dog friendly” home and yard.  Diatomaceous earth (FOOD GRADE only) is very effective and both human and pet friendly – it may take repeated applications (once its wet it cannot do its job) but it does work.   Can be found online. 
    Steam cleaning machines can also be used to clean stubborn areas – without any toxic solutions or chemicals or natural ones either.

  • Although I take care of my pet, I will consider the other things that you have mentioned in this post.  I love my pet and I will make sure that I will use the alternatives that you have mentioned.Cheers.

  • Sasha Fisher

    Couldn’t be more correct about household cleaners and their effect on the health of our pets. And while flea shampoos are concerning, regular pet shampoos could be dangerous as well!

  • Fay

    Thank you so much for providing this information. I realize in reading this I have been careless in strewing mothballs about. My pets may be effected by this which concerns me far more than moth damage. We stopped using lawn chemicals years ago so our three daschunds can play safely in the yard.

  • Excellent article. I’m happy to say we don’t have any of those things around (except a few residual household cleaners, but we are generally using vinegar, bicarb soda, borax etc now), but I am about to buy a new or used desk. Better try to make sure it’s used I guess.

  • Katy L.

    Another thing pet owners tend to overlook is the fact that when pets lick their paws, they end up ingesting toxins that they have accumulated by walking around on dirty surfaces/lawns treated with chemicals etc. Furthermore, if you wear street shoes inside, you are exposing your dog to the toxins that you track in on your shoes.

    • Good point Katy. Thanks for your comment.

  • beth

    I use vinegar for pet stains from my rabbit, is this harmful for my cat while it is wet.

    • tnovak

      I use white vinegar and dilute it with water. I clean my floors and cages in the grooming shop. I’ve been grooming dogs for 23 years and find this works best for the shop pets. I also have my cat there with me. I want to make sure he is safe too. As far as your rabbit cage, I would make sure that the cage is completely dried before putting him back in it. Call your vet and ask to be safe. Don’t take any chances. Rabbits are very sensitive.

    • bettaboy

      H2O2 is not only safe (all life forms have it in our cells as one of many forms of oxygen) but breaks down to water. I clean with it only. (chemically injured so a must) I as well had it in IV’s when at nadir – (only doctor can do this). It kills anything (narcotic tissue when used internal – would not ingest only system that does not have catalyze enzyme to stop action is esophagus)… Can soak in tub.

      Pfizer bought out patent (used in fish farming where fish are so sick – keeps them alive until harvest) and one can not find 33% food grade. Still much can be done with type found in stores. Used with vineger (first Hydrogen Peroxide then Vineger kills most toxic bacteria for counter surfaces).

      Use it without rabbit nearby as even 3% (main kind) can sting. It will not harm fibers as bleach does (may take longer) (raised Wilbur – rabbit as a child). But in 50’s just took him out to play in the yard (no chemicals on yard then) and took his cage and hosed it down. Let i sun/air dry (another form of Oxygen Ozone – two kinds and one from sun is natural. Reason why clothes dried outside have that smell)

  • I suggest you look up the MSDS of the window cleaner. Try a safer method of roach control such as diatomaceous earth which will not harm your cat.

  • CazzNation

    Good Job!! tnx for posting!! got my homework done! 🙂

  • Carolyn

    I currently bought a wool persian rug. It seems to have a moth ball odor, I was told it was 75 years old. My cats lie on it and I wonder if the fumes can harm them. Or, if they lick themselves after being on it, can they be harmed. I am going to call the company I purchased it from and ask how it was stored.

    • It’s likely that your smell is accurate. Moth balls are commonly used for storage of rugs.

  • Jacquelyn

    I’ve have kept my bag of cat food under the sink where there are inclosed chemicals, do you think it’s possible that it could cause my cat to have a kidney failure or something else. She started eating her food where she leaves crumbs and she never used to and she’s only 4 years old?

    • It is probably unlikely that the cat food was compromised by being stored under the sink with other chemical products. However, moving the food to a pantry closet or similar clean, dry, chemical-free location is recommended.

  • Sounds like you should have a vet check for salt allergies, which is not uncommon in small breeds.

  • Thanks for your comments. Interesting about the raw chicken bones and teeth whitening.

  • Kim Owens

    are there any packaged foods that he could eat? we are using Taste of the Wild Venison and Bison flavor. or are all of them bad? I was told he needs crunchy to help with his teeth.

  • Stillirise63

    I discovered that my dog chewed on the mop that was saturated with bleach. A week later he now shakes and acts weird only at night, what is happening to him?

    • Sounds like you should call a vet right away.

    • Anya

      What would u do if a baby drank bleach? CALL POISON CONTROLL. Got to vet ASAP don’t waste time asking ppl online for advise….man ppl shouldn’t get pets if they can’t afford them, some vets mite even do it pro Bono like my vet did when he kept my cat for over 12 weeks experimenting human drugs …his liver failing completely yellow from jaundice my vet said humans would have a 50/50 chance of survival from same sickness….my 4 year old cat he survived and vet said it was a miricle …. Most vets will work out a plan with you, or u can always find an agricultural vet..they don’t charge you ridiculous amounts for dollars worth of meds and advice…


    What about cleansing Pads cause my dog just ate one ): ?

  • Penelope Penny Lindow

    Dogs can have lemon or lime …Any citrus is toxic to cats.

  • Penelope Penny Lindow

    Therapeutic grade Lavender oil mixed with pure water in a squirt bottle is safe, and calming for dogs and cats. Like anything new…make sure they have no allergic reactions to it! 🙂

Blog > Healthy Home > 8 Common Household Chemicals Harming your Pets, & their Non-Toxic Alternatives