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PetArmor® Plus Flea & Tick Topical for Dogs - 1 / 5-22lbs

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Can I use it on puppies?Will this help clear a flea problem I already have, or only prevent new fleas?How fast does it start working?Do I need to reapply it after my dog swims or gets a bath?How often should I apply it?

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4.2 from 93,286 reviews

573K+ sold

PetArmor® Plus Waterproof Flea & Tick Topical for Dogs — 23–44 lbs, 1 Dose

Trusted by dog families and backed by thousands of reviews, PetArmor® Plus delivers waterproof flea and tick protection with the same active ingredients as FRONTLINE® Plus—killing fleas, eggs, larvae, ticks, and chewing lice for up to 30 days per dose.

$5.97

Key Features

•

Made for dogs 23–44 lbs — no guessing on the right fit

•

Waterproof formula kills fleas, eggs, larvae, ticks & chewing lice

•

Same active ingredients (fipronil & (S)-methoprene) as FRONTLINE Plus

•

Starts killing fleas within 24 hours of application

•

Breaks the flea life cycle to help prevent reinfestation

•

One dose delivers up to 30 days of nose-to-tail coverage

Count

Weight

5-22lbs

23-44lbs

45-88lbs

89-132lbs

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Customer confidence

573K+ recently bought this product

Top seller

81% of reviews are positive

High satisfaction

97.7% of customers keep this item

Low return rate

Over 573K+ happy customers

Name: PetArmor® Plus Flea & Tick Topical for Dogs - 1 / 5-22lbs
Brand: PetArmor
SKU: J13EDB0ZV
Price: 5.97 USD
Availability: InStock
Rating: 4.22 (93286 reviews)

Easy Application for Ongoing Prevention

This flea and tick treatment is easy to apply and holds up well, even after baths. I’ve found it works much better as a proactive measure to keep fleas and ticks away, rather than trying to clear up an active infestation. For regular prevention, it does the job and keeps my small dog comfortable.

Verified buyer

Impressive Inexpensive Flea Treatment

This product is efficient and easy-to-use. It breaks the flea cycle effectively while killing chewing lice, flea larvae, and flea eggs. It's a comprehensive solution to irritants on your pet. It kills just as good as Frontline, but at half the price!

Jerry R.

Fast-Acting, Effective, and Easy to Apply!

After applying it to my dog, I noticed that it worked quickly, killing fleas and ticks within hours, which brought immediate relief. It’s also waterproof, so even after bath time or a walk in the rain, I don’t have to worry about the treatment washing off.

Verified buyer

Woman in a green t-shirt smiles while hugging a tan-and-white dog on a sunlit living room couch.

Loved by real dog owners

Trusted by a Community That Keeps Coming Back

When you're comparing flea and tick options, it helps to know what other dog owners think. PetArmor® Plus has earned a strong average rating across thousands of reviews from families protecting dogs just like yours. That kind of real-world feedback is the reassurance many first-time buyers are looking for.

Same active ingredients

Vet-Quality Protection Without the Vet Visit

PetArmor® Plus is made with fipronil and (S)-methoprene — the same active ingredients found in FRONTLINE Plus for Dogs. It's a powerful formula that starts killing fleas within 24 hours and delivers quality protection without the expense of a vet visit, so you can feel confident you're not trading results for value.

Woman in tan shirt and jeans smiles while walking a tan-and-white medium-size dog on a leash along a sunny, tree-lined s

Tan-and-white medium-size dog sitting calmly on grass in a sunlit backyard garden with flowers behind

Sized for your dog

One Easy Dose, a Full Month of Coverage

Matched to your dog's 23–44 lb weight for a proper fit, each waterproof dose delivers nose-to-tail protection for up to 30 days — killing fleas, eggs, larvae, ticks, and chewing lice and breaking the flea cycle. Choose 1-, 3-, 6-, or 12-dose options.

Expert tested. Built for outdoorsy dogs.

Waterproof, 30-day flea & tick protection dog owners keep coming back to

Advocacy

84%

Of customers have recommended us to a friend or family member.

Satisfaction

75%

Of customers gave us positive customer satisfaction scores.

How We Stack Up

PetArmor Plus

Oral flea & tick chews

Flea & tick collars

Kills fleas, ticks, and chewing lice

Kills flea eggs and larvae

Waterproof after application

Lasts up to 30 days per dose

Applied on the skin, no pill to swallow

Same active ingredients as FRONTLINE Plus

A tan-and-white medium-size dog lies relaxed on a rug beside a smiling seated woman in a bright living room.

The Same Actives Vets Trust

Wondering how it compares to Frontline Plus? PetArmor Plus is made with fipronil and (S)-methoprene — the same active ingredients as FRONTLINE Plus for Dogs — without the vet-visit price.

Smiling woman crouches to hug her tan-and-white dog in a sunny green park

Loved by Thousands of Dog Owners

You're not the first to make the switch. PetArmor has earned a strong average rating across thousands of reviews from real dog owners — proof a value choice still delivers the protection you count on.

Tan-and-white medium dog trotting happily across a sunny green lawn with ears up and tongue out

30 Days of Nose-to-Tail Protection

One waterproof application starts killing fleas within 24 hours and keeps working up to 30 days — targeting fleas, eggs, larvae, ticks, and chewing lice to break the flea cycle each month.

Frequently Asked Questions

PetArmor Plus for Dogs is made with fipronil and (S)-methoprene — the same active ingredients found in FRONTLINE Plus for Dogs. It's a way to get quality flea and tick protection without the expense of a vet visit, so you can care for your dog confidently while spending less.

Woman walks a medium-size tan-and-white dog on a leash along a sunny, tree-lined neighborhood path.

Average 4.2 Star Rating

Over 78,000+ Positive Reviews

We've collected over 93,286 reviews from shoppers on our website and major retailers.

All

Effectiveness

Value for money

Price

Quality

Katerin

Apr 21, 2026

Life saving keep your pets free of fleas

I have used this for about 10 years with my dog and 1. He’s still alive. 2. He has never had any of those symptoms that people say that it causes and 3. This product ALWAYS keeps fleas and ticks away! I haven’t seen those bugs for years thanks to this product. Now I am using it with my two new dogs and no issues no side effects! Just a healthy flea free doggie = happy dog!

Apr 18, 2026

It works and is safe for adult dogs!

I was extremely hesitant to use any flea med on my dogs (yorkie and cavapoo, both 3 yo), but we were getting overwhelmed by fleas. I tried catching them manually woth a bit of olive oil which suffocates them instantly, just going through my dogs’ fur. I’d catch10, 20 fleas this way at a time every other day. I got bites too. I finally gave this med a try. I first caught as many fleas as I could with oil, then gave the dogs a nice long bath, and the next day, once they were fully dry, I hesitantly used the med on both. No effect whatsoever in terms of side effects. They didn’t even notice me putting it on them, which I incorporated into a deceitful grooming/brushing session. After a week it two, i saw maybe 2-3 fleas, which is acceptable, but not a whole swarm. Great stuff, no side effects observed. Recommend!Update: ordered it again and received damaged product. All three tubes had cuts in them like deep punctures that were hot sealed. The were not leaking so maybe just a factory defect but still, medication is not something you want to take risks with.Update #2 I re-ordered and received another batch with damage. This is why I took off one star from my review. Two tubes are intact so are usable, but the third has the same puncture like mark. Weird and annoying!

Gulmira Heyl

Feb 20, 2026

Fast! Worth the money.

Omg, I am shocked how well this stuff works! We got two days ago a foster puppy, poor thing was covered in fleas. Overnight shipping, applied in the morning and by the evening she was clean! I almost went with cheaper stuff, but after seen her suffering, decided to buy this instead and I do not regret. Definitely recommend it. And I will keep purchasing for my all foster dogs amd puppy now!

Melody

Jun 19, 2025

Better than Seresto!!!!

So far, so good! I originally tried the Seresto Collar, but unfortunately, it gave my baby a chemical burn AND it only killed *some* fleas. Thankfully, I had purchased it from Chewy, and they were amazing—they refunded me right away. This is my first time using PetArmor Plus, and so far, it’s working well. YAY!!! Fingers crossed; this will be my go-to flea medicine for all my dogs if it proves worthy.

Iara weiman

Jun 13, 2025

It works!

I’ve been using this one on my two small dogs for over a year now, and it’s the only flea and tick treatment I trust. It’s easy to apply, doesn’t irritate her skin, and most importantly—it works. We live in an area with lots of ticks and critters, and since using this consistently, we haven’t had a single flea or tick issue.Each treatment lasts the full month, and I love the peace of mind knowing she’s protected even after playing outside or going on hikes. It dries quickly and doesn’t have a strong smell like some other brands I’ve tried.Definitely worth the price for the quality and effectiveness. If you have a small dog and want a proven product that does what it promises, this is it. I always keep a box on hand!

justin merolla

May 20, 2025

Works great. Save your money

The media could not be loaded. Great price. No aparent health related side effects. We used it on a 70 lb female husky. Shes happy to not have to worry about lime disease anymore! Used for 4 months, consecutive. It worked just as well as the 60$/month/treatment stuff. In the sence that once applied. We never again found ticks or fleas on the dog. Or in the home. With either product.So save your money. Buy this. Look how satisfied this little lady is to be flea and tick free...

Brie Stoffel

May 8, 2025

It really works! No negative side effects

It really works. Ticks have been horrible this year in PA. I was so tired of spending money to see the vet to get the pill which costs so much. There were zero side effects. It quickly dried and did not get in any furniture. Four days after applying I found a dead tick on my dog. So grateful to find something that truly works and is reasonably priced that has zero side effects on my dog!!

Amazon Customer

Aug 26, 2024

Very effective against fleas

PetArmor has been a fantastic solution for my two dogs and cat! It’s fast-acting, waterproof, and provides reliable protection against fleas and ticks. I love that it comes with three doses, making it easy to keep all my pets safe and comfortable. Since using this product, we haven't had any issues with pests. Highly recommend for anyone looking for an effective flea and tick treatment!

Beach Berries

Aug 23, 2024

Love these

So this is my review about flea tick squirts for my dog. I am bothering to write a review because I actually like these a lot. Not only are they a good value but what makes them a good value is two things. One is that they work. I don't know how well they work on a flea infested animal because I don't let my pets get to that point. I don't think my dog even had fleas when I first tried this on her. The more I talk the more I sound like a bad pet owner and I am not. My dog used to take the pill for fleas and ticks and those are pretty expensive. So I thought I would give these a try after reading some reviews. Fortunately those reviews were true. My dog doesn't have any problem with fleas and it's been now about 4 months of using the product. The other thing I like about this product more than any similar that I've ever tried even the ones you pay a lot for at the vet which I have used as well is that it does not smell at all. I didn't smell anything and no I didn't have COVID. I could perhaps notice a slight but pleasant scent but seriously no real smell at all. And to me that is a huge win in addition to no bugs because I don't want my pet going around with some stinky stuff on her that makes her miserable and makes me not want to pet her either. So it's much much more of a pleasant experience to put these on my dog and be done with it because it's not stinky the dog doesn't run around like freaked out because you squirted it. I also got these for my cat and have basically the same result other than the fact that cats don't like anything squirted on them so there's that but there's no smell with the cat squirts either and the cat doesn't have fleas so yay!

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