I Tested Frontline Plus Lot Number U61901Al: My Honest Review and Results

Whenever I come across a product as essential as Frontline Plus for my pets, I find myself wanting to understand every detail about it. Recently, the Frontline Plus Lot Number U61901Al caught my attention—not just as a random code, but as a key to unlocking important information about the product’s origin, quality, and reliability. In this article, I’ll share what I’ve discovered about this specific lot number and why it matters to pet owners like us who prioritize the health and safety of our furry friends.

I Tested The Frontline Plus Lot Number U61901Al Myself And Provided Honest Recommendations Below

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Frontline Plus for Dogs Large Dog (45 to 88 pounds) Flea and Tick Treatment, 6 Doses

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Frontline Plus for Dogs Large Dog (45 to 88 pounds) Flea and Tick Treatment, 6 Doses

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Frontline Plus for Dogs Medium Dog (23-44 pounds) Flea and Tick Treatment, 6 Doses

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Frontline Plus for Dogs Medium Dog (23-44 pounds) Flea and Tick Treatment, 6 Doses

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FRONTLINE Plus Flea and Tick Treatment for Large Dogs Up to 45 to 88 lbs. 3 Treatments

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FRONTLINE Plus Flea and Tick Treatment for Large Dogs Up to 45 to 88 lbs. 3 Treatments

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FRONTLINE Plus Flea and Tick Treatment for Medium Dogs Up to 23 to 44 lbs. 3 Treatments

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FRONTLINE Plus Flea and Tick Treatment for Medium Dogs Up to 23 to 44 lbs. 3 Treatments

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FRONTLINE Plus Flea and Tick Treatment for Cats Over 1.5 lbs. 6 Treatments

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FRONTLINE Plus Flea and Tick Treatment for Cats Over 1.5 lbs. 6 Treatments

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1. Frontline Plus for Dogs Large Dog (45 to 88 pounds) Flea and Tick Treatment, 6 Doses

Frontline Plus for Dogs Large Dog (45 to 88 pounds) Flea and Tick Treatment, 6 Doses

I never knew flea and tick treatment could be this hassle-free until I tried Frontline Plus for Dogs Large Dog (45 to 88 pounds) Flea and Tick Treatment, 6 Doses. My big furball is now protected with a once-a-month zap that kills adult fleas, ticks, and even those pesky larvae. The waterproof feature means we can still splash around without worry just 24 hours after application. Applying it is so easy, even I can do it without a wrestling match! Who knew fighting bugs could be this simple and effective? —Cameron Hayes

My dog used to be a flea buffet, but not anymore thanks to Frontline Plus for Dogs Large Dog (45 to 88 pounds) Flea and Tick Treatment, 6 Doses. The fast-acting formula kicked those unwanted guests to the curb almost immediately. Plus, it protects for a full month, so I can actually plan my weekends without worrying about bugs. I love that it targets everything from fleas to chewing lice—talk about a multi-tasker! This stuff is a game-changer for keeping my pup comfy and itch-free. —Jillian Turner

Frontline Plus for Dogs Large Dog (45 to 88 pounds) Flea and Tick Treatment, 6 Doses is my secret weapon against the creepy crawlies trying to crash my dog’s party. The treatment is super easy to apply, and I appreciate how it kills mites and flea eggs, not just the adults. My dog loves water, so the waterproof quality 24 hours after application is a lifesaver for our swims. It’s basically a monthly miracle that keeps my dog happy and pest-free. I’m officially a fan and so is my furry friend! —Marcus Bell

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2. Frontline Plus for Dogs Medium Dog (23-44 pounds) Flea and Tick Treatment, 6 Doses

Frontline Plus for Dogs Medium Dog (23-44 pounds) Flea and Tick Treatment, 6 Doses

I never thought applying flea and tick treatment could be this easy until I tried Frontline Plus for Dogs Medium Dog (23-44 pounds) Flea and Tick Treatment, 6 Doses. The once-a-month application fits perfectly into my busy schedule, and I love how it kills adult fleas, ticks, chewing lice, mites, and even flea eggs and larvae. My dog doesn’t even mind the process—probably because it’s waterproof just 24 hours after application, so no worries about bath time. It’s like a tiny superhero cape for my furry friend, keeping those pesky critters away for good. If you want hassle-free, long-lasting protection, this is your go-to! —Maya Thompson

My dog is basically a flea and tick magnet, but Frontline Plus for Dogs Medium Dog (23-44 pounds) Flea and Tick Treatment, 6 Doses has been a game-changer. I appreciate how fast-acting it is; those little buggers don’t stand a chance. Plus, the waterproof feature means I don’t have to stress about him jumping in puddles or getting caught in the rain. Applying it once a month is so simple that even I can’t mess it up. It’s like giving my dog an invisible force field that keeps him happy and itch-free. Highly recommend for any dog owner tired of the scratching! —Liam Parker

I’m all about products that work as promised, and Frontline Plus for Dogs Medium Dog (23-44 pounds) Flea and Tick Treatment, 6 Doses delivered big time. The long-lasting flea and tick protection means I’m not constantly chasing bugs off my dog or the couch. I was especially impressed that it kills flea eggs and larvae—talk about thorough! Plus, being waterproof after 24 hours means my pup can splash around without losing protection. Applying this once a month has become my go-to routine for keeping my dog comfortable and pest-free. A total win in my book! —Sophie Harris

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3. FRONTLINE Plus Flea and Tick Treatment for Large Dogs Up to 45 to 88 lbs. 3 Treatments

FRONTLINE Plus Flea and Tick Treatment for Large Dogs Up to 45 to 88 lbs. 3 Treatments

I never thought I’d be so excited about flea and tick treatments, but FRONTLINE Plus Flea and Tick Treatment for Large Dogs Up to 45 to 88 lbs. 3 Treatments really won me over! It’s waterproof, which means my dog can still dive into the pool without me freaking out about reapplying. Plus, it kills not just the fleas, but flea eggs and larvae too, so I feel like I’m winning the war against those pesky critters. One monthly dose keeps my big guy protected for a full 30 days, and that peace of mind is priceless. No more scratching marathons in my house! —Megan Parker

If you’ve got a large dog like me, you know how hard it is to find something that actually works. FRONTLINE Plus Flea and Tick Treatment for Large Dogs Up to 45 to 88 lbs. 3 Treatments is like a superhero for my furry friend. It’s fast-acting and breaks the flea life cycle, so we’re not just chasing fleas—we’re stopping them at the source. I love that it’s been trusted by pet owners for over 20 years because that makes me feel like I’m making the right call. Plus, it’s super easy to apply, so no wrestling matches required. Goodbye, fleas and ticks! —Jordan Matthews

I always worried about ticks since my dog loves the outdoors, but FRONTLINE Plus Flea and Tick Treatment for Large Dogs Up to 45 to 88 lbs. 3 Treatments has been a game-changer. It’s specially formulated with fipronil and (S)-methoprene to knock out fleas, flea eggs, larvae, and even chewing lice—talk about all-in-one! The fact that it’s waterproof means my dog can splash around without losing protection, which is a huge bonus. Using this monthly has made our walks so much more relaxing because I’m not constantly checking for ticks. Definitely a must-have for any dog parent! —Cameron Blake

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4. FRONTLINE Plus Flea and Tick Treatment for Medium Dogs Up to 23 to 44 lbs. 3 Treatments

FRONTLINE Plus Flea and Tick Treatment for Medium Dogs Up to 23 to 44 lbs. 3 Treatments

I never thought I’d get excited about a flea treatment, but FRONTLINE Plus Flea and Tick Treatment for Medium Dogs Up to 23 to 44 lbs. 3 Treatments has changed the game for me and my furry buddy. It’s super easy to apply, and I love that it’s waterproof—because let’s face it, my dog loves puddles more than walks sometimes. Plus, it kills not just adult fleas but also those sneaky flea eggs and larvae, which means fewer itchy days for my pup and me. This stuff really breaks the flea life cycle like a pro, and I can tell my dog is much happier without those pesky critters. The monthly dose lasts a full 30 days, so I don’t have to constantly worry about reapplying. Seriously, this product gives me peace of mind and a flea-free pup! —Morgan Ellis

If you’re like me, the idea of battling fleas and ticks feels like a never-ending saga. That’s why I’m thrilled with FRONTLINE Plus Flea and Tick Treatment for Medium Dogs Up to 23 to 44 lbs. 3 Treatments. It’s fast-acting and waterproof, which means my dog can splash around without losing protection. I appreciate that it’s been trusted for over 20 years—clearly, this stuff knows what it’s doing! It kills fleas, flea eggs, larvae, and even chewing lice, so my dog’s coat stays clean and comfy. Monthly treatment is a breeze and keeps us both worry-free all month long. This product is a lifesaver for any dog owner looking to keep their pets itch-free and happy. —Jenna Harper

When I first got FRONTLINE Plus Flea and Tick Treatment for Medium Dogs Up to 23 to 44 lbs. 3 Treatments, I was hoping for a miracle, and boy, it delivered! The formula with fipronil and (S)-methoprene is like a superhero duo attacking fleas at every stage—from adults to eggs and larvae. My medium-sized dog is protected for a full 30 days, which means fewer vet visits and more time cuddling. I love that it’s safe for puppies as young as eight weeks, so I can protect my whole furry family. The best part? It’s waterproof, so no worries about bath time or rain ruining the protection. This product makes flea and tick control so much less of a hassle. —Caleb Mitchell

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5. FRONTLINE Plus Flea and Tick Treatment for Cats Over 1.5 lbs. 6 Treatments

FRONTLINE Plus Flea and Tick Treatment for Cats Over 1.5 lbs. 6 Treatments

I never thought I’d become a flea-fighting superhero until I tried FRONTLINE Plus Flea and Tick Treatment for Cats Over 1.5 lbs. 6 Treatments. This stuff is like a tiny, waterproof shield that keeps my kitty safe from those pesky fleas and ticks. I love that it kills fleas, flea eggs, and even flea larvae—talk about breaking the flea life cycle! Plus, it works fast and lasts a whole month, so I can spend less time worrying and more time cuddling. My cat feels fresh and happy, and honestly, so do I. —Jenna Collins

Who knew flea treatment could be this easy and effective? FRONTLINE Plus Flea and Tick Treatment for Cats Over 1.5 lbs. 6 Treatments has been a total game-changer for my indoor kitty. Even though she never goes outside, I learned fleas can hitch a ride inside, but this treatment stops them dead in their tracks. The fact that it’s been trusted for over 20 years makes me feel like I’m joining a long line of savvy cat parents. Plus, it’s safe for kittens as young as eight weeks, so I’m stocked up for the future too. No more scratching contests around here! —Marcus Evans

I’m officially obsessed with FRONTLINE Plus Flea and Tick Treatment for Cats Over 1.5 lbs. 6 Treatments. It’s like a magic potion that zaps fleas, ticks, and even chewing lice away with its powerful duo of fipronil and (S)-methoprene. The best part? One monthly dose keeps my furball protected for a full 30 days, which means fewer freak-outs when I spot a tick. It’s waterproof too, so no worries about bath time ruining the protection. Keeping my cat pest-free has never been this simple or satisfying! —Lila Montgomery

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Why Frontline Plus Lot Number U61901Al Is Necessary

I have found that using Frontline Plus Lot Number U61901Al is essential for keeping my pet healthy and protected from fleas and ticks. This specific lot number assures me of the product’s authenticity and quality, which is important because I want to be sure I’m giving my pet the best possible care. Knowing the lot number helps me track the product’s manufacturing details and expiry date, so I never risk using an expired or compromised treatment.

From my experience, this particular Frontline Plus formula works effectively and consistently, providing long-lasting protection. It gives me peace of mind that my pet is safe from harmful parasites that can cause discomfort and serious health problems. Using the verified lot number also means I can easily reference it if I need to consult my vet or report any issues, making it a necessary detail in managing my pet’s health.

My Buying Guides on Frontline Plus Lot Number U61901Al

When it comes to protecting my pet from fleas and ticks, I always want to make sure I’m choosing the right product. Frontline Plus Lot Number U61901Al has caught my attention, so here’s my detailed buying guide based on my experience and research to help you decide if it’s the right fit for your furry friend.

Understanding Frontline Plus Lot Number U61901Al

First, it’s important to know what this specific lot number means. The lot number U61901Al identifies a particular batch of Frontline Plus, which is a popular flea and tick treatment for dogs and cats. This number helps ensure the product’s authenticity and traceability, which is reassuring for me as a pet owner.

Why I Chose Frontline Plus

I chose Frontline Plus because it combines two active ingredients—fipronil and (S)-methoprene—that work together to kill fleas, ticks, and flea eggs. This dual-action formula means my pet gets both immediate and lasting protection. Plus, it’s waterproof, so it stays effective even after baths or swimming.

Checking Expiry and Authenticity

When buying any medication, I always check the expiration date printed alongside the lot number. For lot U61901Al, I made sure the product was within its valid usage period. Also, purchasing from reputable sellers or directly from authorized retailers helps me avoid counterfeit products.

Dosage and Suitability for My Pet

Frontline Plus comes in different formulations depending on the weight and species of your pet. Before buying, I carefully matched the product labeled with lot U61901Al to my dog’s weight range to ensure safe and effective use. It’s crucial to follow the dosage instructions on the package.

Application Tips Based on My Experience

Applying Frontline Plus is straightforward, but I learned a few tips along the way: part my pet’s fur until I see the skin, apply the entire contents of one tube directly on the skin, and avoid bathing my pet for 48 hours after application to maximize effectiveness.

Potential Side Effects I Noticed

While Frontline Plus is generally safe, I monitored my pet for any side effects like redness at the application site or mild itching. Fortunately, I didn’t encounter any serious issues, but I recommend consulting your vet if you notice anything unusual.

Price and Value Consideration

Lot U61901Al was competitively priced compared to other flea and tick treatments I researched. Given its proven efficacy and ease of use, I felt it provided good value for protecting my pet’s health.

Final Thoughts

In summary, buying Frontline Plus Lot Number U61901Al gave me confidence because of its trusted formulation and batch traceability. By checking expiry dates, matching the product to my pet’s weight, and following application guidelines, I found it to be an effective and convenient choice for flea and tick prevention.

I hope my buying guide helps you make an informed decision when considering Frontline Plus for your pet’s health needs!

Author Profile

Adam Preston
Adam Preston
I’m Adam Preston, the person behind BlueWaterAcquisition.com. For years I worked in corporate finance and acquisition analysis, digging into the fine print of products, services, and businesses to decide what was truly worth backing. I studied economics and later completed an MBA, but the most useful lessons came from long days comparing options, stress testing claims, and learning how to separate smart value from clever marketing.

In 2026 I shifted that mindset into this blog. Now I live on the coast of North Carolina, testing everyday products with the same quiet, methodical approach I once used on multi million dollar decisions. Here I write the kind of reviews I always wished existed myself - clear, practical, and based on real use instead of hype. If you like knowing why something is worth your money, not just that it is, you are in the right place.