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.

Does Lime Kill Fleas on Cats? Vet Reviewed Effectiveness & Safety Explained

Lime inside plastic bag

Fleas can make your cat’s life miserable and yours a nightmare as you try to fight the infestation. Those searching for non-pesticide products to kill fleas might wonder if lime is an effective alternative. While lime may be somewhat effective against fleas, it won’t necessarily kill them and should never be applied or used around your cat.

In this article, we’ll discuss using lime to kill fleas and the potential dangers to your cat. We’ll also provide tips to fight flea infestations that should be more effective than lime.

divider cats oct 2024

What Is Lime?

Lime is the common term for various products manufactured from limestone, including quicklime, hydrated lime, and garden lime. These products have several purposes, including building materials, soil treatments, and insect repellants. Lime consists primarily of calcium compounds, such as calcium carbonate and calcium oxide.

Limestone powder and garden soil
Image By: FotoHelin, Shutterstock

Is Lime Effective Against Fleas?

Lime in various forms has been used for years to repel agricultural pests and treat mite infestations in livestock. However, there’s only limited research regarding its effectiveness. One study from 1992 found that hydrated lime worked against one type of insect but was ineffective against others, like aphids 1.

According to the USDA, lime sulfur dips effectively control mites and other insects on livestock 2. Again, this research does not explicitly address the effectiveness of lime against fleas, nor did any of them study the use of the product on cats.

If used to treat your yard, lime may be helpful over time in treating fleas, but it is unlikely to do the job independently. In addition, it may damage your lawn or garden plants.

Is Lime Safe for Cats?

In addition to its questionable effectiveness, lime presents several safety concerns for cats. Garden and dolomitic lime, made of calcium carbonate, can cause digestive upset in pets if ingested.

Quicklime and hydrated lime are corrosive and can cause chemical burns if they contact your cat. Lime dust can cause respiratory irritation if inhaled. Lime is unsafe for cats, and they should not be allowed outdoors if you treat your yard with it.

Sick sad cat lying on the bed
Image Credit: Zhuravlev Andrey, Shutterstock

divider cats oct 2024

Tips for Treating Fleas on Your Cat

To effectively treat fleas on your cat, you need to eliminate all flea life cycles, including the adult insects on your pet and the eggs and immature stages living in the environment. You must treat all the pets in the house, regardless of whether they go outside.

The most effective way to kill fleas on your cat is to use a product recommended by your veterinarian. They are generally available as pills or topical products applied to the skin. Flea collars and shampoos are less effective, as are over-the-counter products.

If you need to speak with a vet but can't get to one, head over to PangoVet. It's an online service where you can talk to a vet online and get the advice you need for your pet — all at an affordable price!

PangoVet_Mention-in-Content for PangoVet2 save money

In addition to killing the fleas on your cat, you’ll need to battle the bugs in your home and yard. Otherwise, the fleas will hatch from their eggs, mature, and return to your cat. Talk to a pest control specialist to recommend other products to kill fleas in your yard and inside your house if needed.

You should wash your cat’s bedding in hot water or replace it. Frequent vacuuming is an effective tool for reducing the number of fleas, in addition to other measures. Pay close attention to vacuuming cracks and baseboards, which are popular spots for fleas to lay eggs. Empty the canister or throw away the vacuum bag outside your house after each cleaning session.

It can take months to eradicate a flea infestation, and the most effective technique for treating the pests in your yard and home is to contact a professional pest control company and your veterinarian.

applying flea treatment to cat
Image Credit: Csaba Deli, Shutterstock

divider cats oct 2024

Conclusion

Research is limited on the effectiveness of lime in killing fleas on cats. Because of its safety concerns, lime is not recommended for treating fleas. Preventing flea infestations is always easier than treating them, so talk to your veterinarian to find an effective product. Fleas carry diseases and internal parasites in addition to the itching associated with their bites. If your cat is infested with fleas, visit your veterinarian first for an effective treatment.

Related Reads:


Featured Image Credit: OTP art, Shutterstock

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

2 Responses

  1. Why do they use it on kittens in all the shelters, if it is so toxic to cats? credelio nearly killed my young healthy cat, but that's what you recommend, safe and effective, right? How do you say pharma shill without saying pharma shill? lol

    1. Hi Kat, very sorry to hear about your cat. We do not know of any shelter using limestone to treat fleas, and this dust can irritate a cat’s paws, eyes, and respiratory system. If ingested after grooming, it is extremely dangerous. The advice in our post is to use a product recommended by your veterinarian. We appreciate their expertise.

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.

Talk With A Vet Online

Peace of mind,
anywhere, anytime

Affordable vet advice

10 Best Cat Bowls in the UK in 2025 – Reviews & Top Picks

Buying a cat bowl can seem like an ordinary, simple task. However, as well as deciding on the best material and whether you...

9 Best Ear Mite Treatment for Cats in 2025 – Reviews & Top Picks

If you’re watching your cat scratching their ears obsessively and continuously shaking their head, they might have ear mites. While they aren’t terribly...

Persian Kittens For Sale in Arkansas: Breeders List 2025

Excited Cats advocates for adopting before shopping, though we fully understand there are many reasons for seeking a breeder. So, we encourage it...

American Bobtail Cat Breed: Info, Pictures, Temperament & More

The American Bobtail is a beloved breed with a unique, stubby tail. Although they are well-known for their bobbed tail, they are also...

More related

Can Cats Eat Yams? Vet-Approved Nutrition Facts

Yams are a big part of meals in autumn and winter. As you prepare for holiday dishes, you may be wondering if you...

6 DIY Cat Popsicle Recipes (Vet-Approved)

Popsicles are tasty treats, but they’re usually not safe for cats to eat because they can contain added sugar, artificial colors, and other...

How to Check Your Cats Heart Rate: Vet-Reviewed Advice & Tips

As a pet parent of a beloved cat, you want the cat to be happy, healthy, and well-fed. You do everything in your...

7 Pet-Friendly Hotels in Grand Junction, CO (2025 Update)

While traveling with a cat may not be the easiest task in the world, it is certainly possible. If you need to transport...

Keep reading

Can Cats Eat Durian? Vet Approved Facts & FAQ

Unless you’re a fan of cooking shows or love learning about unusual foods, you might not be familiar with durian, an unusual tropical fruit. If you have heard of it, you’re most likely aware that this food is famous for...

Can Cats Eat Durian

Diamond Naturals Cat Food Review of 2025: Recalls, Pros & Cons

Review Summary Diamond Naturals makes healthy yet affordable food for pet owners. The company makes a wide range of both dog and cat food, including recipes for specific ages and breeds of animals. One of its most popular ranges is...

Diamond Naturals Cat Food

Why Does My Cat Bite My Chin? 6 Vet-Verified Reasons for This Behavior

Cats have myriad ways in which they choose to express their emotions to humans. Some of the more common methods include meowing and purring, treading, and kneading. Your cat may also indulge in occasional chin biting. This is rarely a...

cat biting woman's chin

3 Homemade Cat Gravy Recipes: Vet Approved Healthy Options

Cats are obligate carnivores, so they need nutrients only found in animal products for a complete diet—including animal protein and fat. Cats are also notoriously picky, so reliable kibble may not be enough to entice their appetite sometimes. While it’s...

kitten eating gravy food

8 Different Types of Cat Treats: Vet-Approved Tips on How to Choose

There are a lot of cat treats on the market, so deciding which to get your feline friend can be challenging. Would they prefer something crunchy or soft? Wet or dry? With catnip or without? Choosing the perfect cat treat...

blue-maine-coon-having-treats

7 Best Glucose Meters for Cats in 2025 – Reviews & Top Picks

It can be stressful learning that your cat has diabetes, and the thought of poking them with a needle to draw blood can seem overwhelming. The last thing you want is for your cat to be ill, and as a...

Cat's owner measuring the blood sugar values of his feline using glucometer

Can You Use Baby Shampoo on a Cat? Feline Shampoo Guide

Many cats don’t particularly enjoy being bathed, but sometimes it is necessary. Most cats never need shampooing, but if your cat has a skin condition that needs treating or has rolled in something that you need to clean off, you...

grey cat bath shampoo bubbles

How to Clean a Cat Bowl: 8 Easy Steps & Vet-Reviewed Precautions

A cat bowl is easily one of the most important pieces of equipment for a cat owner. Just like humans, cats are affected by food-borne illnesses, most commonly caused by bacteria such as Salmonella, E.coli and Listeria. These illnesses can...

hepper nom nom cat bowl