Get

In Your Inbox

Catster is reader-supported. When you buy via links on our site, we may earn an affiliate commission at no cost to you. Learn more.

Is Weed Killer Safe for Cats? Vet-Reviewed Facts & FAQ

Share

man spraying weed killer in a red container

Weed killers are ideal for keeping your lawn pristine, but are they safe for the kitties passing through? The answer is that it depends on the type of weed killer you’re using and how you use it. Some products are marked “pet safe,” but even these need to be used in a certain way to prevent harm to your furry friends. Read on to learn more.

divider cats oct 2024

Can Weed Killer Poison Cats?

Yes, especially if it’s not used according to the instructions. You can certainly find weed killers labeled “safe for pets” but with the caveat that they’re used as instructed.

For example, if the instructions say that a product is pet-safe as long as you wait 48 hours before letting your cat roam the area again, but you let your cat out before the product has fully dried, the product could end up on your cat’s fur, feet, or even in their mouth if they self-groom after getting product on their coat.

Toxic Ingredients

Some of the ingredients commonly found in weed killers that can cause toxicity if ingested include glyphosate, chlorophenoxy derivatives, ferrous sulfate, paraquat, and fatty acids like octanoic acid (caprylic acid), decanoic acid (capric acid), and nonanoic acid (pelargonic acid).

Products that need to be diluted with water before use are another risk factor, as these have higher concentrations of toxins compared with products that you simply spray on.

spraying weed killer outdoors
Image Credit: Daria Nipot, Shutterstock

Signs of Poisoning

Signs a cat has come into contact with or ingested toxic ingredients include eye irritation, skin irritation, respiratory problems, vomiting, diarrhea, lethargy, anorexia, pupil dilation, salivation, abdominal pain, mouth ulcers, and blood in the stool.

Signs and severity can vary depending on the toxin that was ingested and how much was ingested. Some cats get away with a minor stomach upset, whereas others experience more serious issues.

If you suspect poisoning, please get your cat checked by a vet right away and let them know what has or may have been ingested. This can help your vet determine the right course of action. If you think your cat may have walked in an area with herbicide, clean their paws with gentle soap and warm water straight away to reduce the risk of it being licked off.

What About “Organic” or “Natural” Weed Killers?

Unfortunately, even if a product is labeled “organic” or “natural,” this doesn’t necessarily mean there’s no risk to your cat. These can still contain potentially poisonous ingredients like fatty acids, so it’s equally as important as it is with regular products to use “natural” or “organic” products only as directed.

Tips for Keeping Cats Safe

If your garden weeds are getting you down, here are some tips for tackling them while keeping your cat safe at the same time.

  • Always opt for pet-safe weed-killer products and follow the instructions on the package.
  • Chemical residue can linger on surfaces for 48 hours or even longer after application. Check the advised wait time on the packaging before you allow your cat access to the area, and consider exceeding it to be on the safe side.
  • Consider pulling weeds by hand, if possible, to make sure cats are completely safe.
  • Stick to pet-safe, ready-to-use products instead of concentrated products that you need to dilute.
  • When not using them, store weed-killing products where your cat can’t find them and knock them over.
rear-of-a-toyger-cat-lying-on-the-grass
Image Credit: Kutikova Ekaterina, Shutterstock

divider cats oct 2024

Final Thoughts

To recap, pet-safe weed killers are best if you have cats or dogs that spend time in the garden, but it’s imperative to use them as instructed and make sure you give them enough time to completely dry before letting pets out into the area.

While it’s unlikely that a cat would ingest a large amount of weed killer (the smell and taste would be enough to put them off), they can easily come into contact with it and lick it off their fur or paws while grooming, and this is where the danger lies.


Featured Image Credit: Dean Clarke, Shutterstock

Want content like this delivered to you?

Sign Up For Our Newsletter

News, insights, expert advice, and everything cat

* By submitting, you agree to our Terms & Conditions and Privacy & Cookies Policy.




How useful was this post?

Click on a star to rate (you can leave written feedback after clicking submit)

Help us improve Catster for pet parents!

Your feedback really matters.

What did you like about this post? Also how can we improve it?

Join the conversation

Leave a Reply

You’re very welcome to leave a comment or question. Please know that all comments must meet our community guidelines, and your email address will NOT be published. Let’s have a positive and constructive conversation.


Catster's Digital Magazine is Back!

Vet-approved health & behavior advice

Real cat stories & community features

Chatting About Big Cat Tourism, Lion Hunting, and Learning From Our Mistakes | Chatty Cattys, Episode 26

In this episode of Catster’s Chatty Cattys podcast, Nicole and Dr. Karyn dive into the dark side of big cat tourism and the...

Why Cats Sit by the Door (But Don’t Go Through It)

Door-sitting is one of those quirky little habits that almost every cat owner experiences at some point. You know how it goes: a...

Six Legs Are Better Than Three – How A Tripod Dog and Kitten Found Friendship Through Recovery

Sometimes the most meaningful friendships begin in the most unexpected places. At a Maryland veterinary hospital operated by Last Chance Animal Rescue, two...

The Original Space Invaders – Why Zero Respect for Personal Boundaries Is a Good Thing

Cats have a reputation for being independent, and in many ways they are. But anyone who has tried to work at a laptop...

More related

Can Cats Have Whipped Cream? Vet-Verified Facts & FAQ

Heading to a café and ordering a mocha topped with a mountain of whipped cream is one of the many small joys in...

Why Does My Cat Sit On Me All The Time? 6 Vet-Verified Reasons

Cats, for the most part, are not always the most affectionate creatures in the world, and for many cat lovers, this is precisely...

Cats and Snow: A Study in Feline Enrichment

Hi, I’m Dr. Lauren! Read my introduction to learn more about me and my two adventurous cats, Pancake and Tiller. One of my...

Does My Indoor Cat Need a Rabies Shot? Vet-Reviewed Facts & FAQ

Like humans, cats are susceptible to several diseases that can be deadly. There’s good news, however, as there are vaccinations for most of...

Keep reading

Will a Mother Cat Abandon Her Kittens if I Touch Them? Vet-Reviewed Facts

Many of us have some version of this childhood memory: we come across a kitten or kittens in our yard or a park that seem to be on their own. Every adult around us has different ideas on how to...

Adorable little tabby newborn kitten sleeping in woman hands

Why is My Cat Pacing? 8 Vet-Verified Reasons & How You Can Help

It can be worrying if you suddenly start to notice that your cat is pacing. If this turns into a regular occurrence rather than a one-off, it can be a sign that everything isn’t quite right with your beloved cat....

beige fawn maine coon cat on the move walking through the garden

Why Is My Cat Squeaking Instead of Meowing? Vet-Verified Info & Reasons

Cats make all kinds of noises to communicate with their owners and each other. Some cats have resounding meows that owners can hear from around the house, and others will softly chirp or squeak to “talk”. All these noises are...

cat meowing

Why Does My Cat Need Mental Stimulation? 7 Vet-Approved Reasons

Cats are quite curious and inquisitive by nature, so they require a significant amount of mental stimulation to satiate their curiosity and keep them happy. Along with keeping them engaged, mental stimulation can also boost a cat’s mood, increase their...

two cats playing with toy at home

How to Tell If a Stray Cat Is Pregnant? 10 Vet-Approved Signs

There are many challenges to taking in a stray cat. First, you need to make sure that they’re healthy and uninjured. Second, you should locate their owners in case they are simply lost rather than abandoned. Unfortunately, many stray cats...

pregnanat ginger cat outdoor

Orijen Cat Food Review of 2026: Recalls, Pros & Cons

Review Summary As you probably guessed, “Orijen” is a play on “origin”—meaning, the food harkens back to the origins of a cat’s diet. As a result, the manufacturer strives to create biologically-appropriate offerings for your cat. That means plenty of...

Orijen Cat Food Review

Can Cats Eat Raspberries? Vet Reviewed Nutritional Facts & Safety Guide

If your cat needs to shed a few pounds, part of their diet plan might include cutting back on treats or looking for lower-calorie alternatives to commercial kitty snacks. We know that fruits, such as raspberries, are healthy choices for...

Can Cats Eat Raspberries

Cat Grass vs. Catnip: Vet-Verified Differences

Sure, all cat owners—and even those without cats—have heard about catnip. It has been a staple in the cat world for what seems like an eternity. Once upon a time, it was even believed to help humans with ailments. You...

Cat Grass vs. Catnip

Love Cats? So Do We! Join the Catster Community

Stay informed with expert pet care insights delivered straight to your inbox! Discover professional guidance on animal behavior, feeding tips, trusted product picks, and much more.




Sign up for the Catster Email Newsletter

Stay informed with expert pet care insights delivered straight to your inbox! Discover professional guidance on animal behavior, feeding tips, trusted product picks, and much more.