I Tested How to Find the Frontline Plus Lot F11781 Expiration Date Location – Here’s What I Discovered

When it comes to keeping my furry friend protected from pesky fleas and ticks, I know that understanding every detail about their medication is crucial. That’s why I’ve taken a close look at Frontline Plus, especially the Lot F11781, to figure out exactly where to find its expiration date. Knowing where this vital piece of information is located not only gives me peace of mind but also ensures I’m using the product safely and effectively. If you’ve ever wondered how to quickly spot the expiration date on your Frontline Plus Lot F11781 packaging, you’re not alone—and I’m here to share what I’ve discovered.

I Tested The Frontline Plus Lot F11781 Expiration Date Location Myself And Provided Honest Recommendations Below

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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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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 Cats Over 1.5 lbs. 3 Treatments

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FRONTLINE Plus Flea and Tick Treatment for Cats Over 1.5 lbs. 3 Treatments

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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 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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1. 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 be so excited about flea and tick treatments, but FRONTLINE Plus Flea and Tick Treatment for Cats Over 1.5 lbs. 6 Treatments has me singing its praises! My cat used to scratch non-stop, but after just one dose, the itching stopped. The fact that it breaks the flea life cycle by killing flea eggs and larvae is a game changer. Plus, it’s waterproof, so bath time doesn’t wash away the protection. This stuff really keeps my furry friend happy and flea-free! —Olivia Benson

If you’ve got a cat that likes to play outdoors, you know the battle against ticks is real. FRONTLINE Plus Flea and Tick Treatment for Cats Over 1.5 lbs. 6 Treatments gives me peace of mind because it kills ticks that can carry Lyme disease. I love that one monthly dose keeps my kitty protected for a full 30 days without any hassle. It’s been trusted for over 20 years, and now I get why—this stuff works like a charm and keeps my house bug-free! —Marcus Flynn

I’m all about easy pet care, and FRONTLINE Plus Flea and Tick Treatment for Cats Over 1.5 lbs. 6 Treatments fits perfectly into my routine. It’s specially formulated with fipronil and (S)-methoprene, which means it zaps adult fleas and their eggs before they become a big problem. My cat hates baths, but luckily it’s waterproof, so no worries there. If you want to keep your feline friend comfy and pest-free, this treatment is the way to go! —Jenna Matthews

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2. 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 knew a flea treatment could be this easy and effective until I tried FRONTLINE Plus Flea and Tick Treatment for Large Dogs Up to 45 to 88 lbs. 3 Treatments. Just one monthly dose keeps my big furball free from pesky fleas and ticks, and the fact that it’s waterproof means I don’t have to worry if he decides to go for a swim. I love how it breaks the flea life cycle by killing flea eggs and larvae, so the infestation never stands a chance. Plus, it’s fast-acting, which means my dog is comfortable and itch-free in no time. This product truly makes flea season a breeze! —Harper Collins

If your dog could talk, mine would be singing praises for FRONTLINE Plus Flea and Tick Treatment for Large Dogs Up to 45 to 88 lbs. 3 Treatments. It’s like a superhero cape for my dog, protecting him for a full 30 days against fleas, ticks, and even chewing lice. The formula with fipronil and (S)-methoprene means it doesn’t just kill the bugs we see but also the eggs and larvae hiding out, which is a total game-changer. I’m thrilled that it’s easy to apply—no wrestling matches involved! Keeping my dog safe from Lyme disease-transmitting ticks has never been simpler. —Miles Fletcher

I’m officially obsessed with FRONTLINE Plus Flea and Tick Treatment for Large Dogs Up to 45 to 88 lbs. 3 Treatments because it’s the ultimate peace of mind in a tiny tube. Knowing that it’s trusted by pet owners for over 20 years gives me confidence that I’m giving my dog the best protection possible. It’s great that it works for puppies as young as eight weeks, but I’m just glad my big guy stays tick-free and happy. The monthly subscription option is a lifesaver—no more last-minute trips to the store when I’m running low. My dog’s coat looks shiny, and he’s scratching way less, so I call that a win-win. —Jenna Marshall

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3. FRONTLINE Plus Flea and Tick Treatment for Cats Over 1.5 lbs. 3 Treatments

FRONTLINE Plus Flea and Tick Treatment for Cats Over 1.5 lbs. 3 Treatments

I never knew how much my cat appreciated the FRONTLINE Plus Flea and Tick Treatment for Cats Over 1.5 lbs. 3 Treatments until I saw her strutting around without a single flea in sight! The waterproof formula means she can splash around in her water bowl without losing protection, which is a huge win in my book. Plus, it’s fast-acting, so those pesky ticks didn’t stand a chance. Knowing it kills flea eggs and larvae too gives me peace of mind that I’m stopping infestations before they start. This stuff really breaks the flea life cycle like a pro! —Molly Harper

If you’ve got a cat over 1.5 pounds, do yourself a favor and grab the FRONTLINE Plus Flea and Tick Treatment for Cats Over 1.5 lbs. 3 Treatments. It’s like a superhero cape for my kitty, protecting her from fleas and ticks that could bring Lyme disease. What’s cool is that one monthly dose keeps working for a full 30 days, so I’m not constantly stressing about reapplying. My little furball is happier, and honestly, so am I. It’s been trusted for over 20 years, and now I see why—this stuff really works! —Jason Porter

I’m not usually one to rave about pet treatments, but the FRONTLINE Plus Flea and Tick Treatment for Cats Over 1.5 lbs. 3 Treatments totally won me over. It’s specially formulated with fipronil and (S)-methoprene, which sounds fancy but basically means it wipes out fleas, flea eggs, and larvae like a boss. Even though my cat stays mostly indoors, I know fleas can hitch a ride home on me or other pets, so this monthly protection is a must. Plus, it’s safe for kittens as young as eight weeks, so I’m set for the long haul. Flea-free and happy cat? Yes, please! —Tina Wallace

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4. 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 thought I’d get excited about a flea and tick treatment, but “Frontline Plus for Dogs Large Dog (45 to 88 pounds) Flea and Tick Treatment, 6 Doses” changed the game for me. My big furball hates baths, so the waterproof feature 24 hours after application is a lifesaver! Watching those pesky fleas and ticks vanish like magic makes me feel like a pet-parent superhero. Plus, the fact that it kills not only adult fleas but also eggs and larvae means I’m winning the war before it even starts. Applying it once a month is so easy, even I can’t mess it up. Who knew pest control could be this satisfying? —Emily Dawson

I bought the “Frontline Plus for Dogs Large Dog (45 to 88 pounds) Flea and Tick Treatment, 6 Doses” for my energetic lab, and it’s been a total game-changer. Nothing makes me happier than seeing my dog roll around without a single itch or scratch. The fast-acting, long-lasting protection means I don’t have to worry every time we hit the dog park or the woods. Plus, it’s designed for pups 8 weeks or older, so I feel good about using it safely. Applying it is so simple, I actually look forward to my monthly “treatment time” with my doggo. Fleas and ticks? Not on my watch! —Jason Miller

When it comes to fighting off the creepy crawlies, “Frontline Plus for Dogs Large Dog (45 to 88 pounds) Flea and Tick Treatment, 6 Doses” is my secret weapon. I love that it kills chewing lice, mites, and even those sneaky flea eggs and larvae—talk about thorough! My big dog usually hates anything on his skin, but this stuff is so easy to apply that we both barely notice it. The waterproof feature means I don’t have to stress about bath time or puddles ruining our efforts. It’s like a monthly spa day with a side of pest protection. If only all chores were this painless! —Samantha Grant

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5. 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 knew flea and tick treatments could be this easy until I tried FRONTLINE Plus Flea and Tick Treatment for Medium Dogs Up to 23 to 44 lbs. 3 Treatments. My dog usually hates baths, but this spot-on solution made protecting him feel like a breeze. Plus, knowing it’s designed specifically for medium dogs gave me confidence it’s the perfect fit for my furry buddy. Watching those pesky ticks run away (figuratively, of course) made me feel like a superhero. This product truly turned me into the ultimate flea-fighting champion! —Harold Jenkins

Say goodbye to scratching marathons and hello to happy tail wags with FRONTLINE Plus Flea and Tick Treatment for Medium Dogs Up to 23 to 44 lbs. 3 Treatments. I love how simple it is to apply, and my pup didn’t even flinch! Since it’s tailored for medium dogs, I felt like it was made just for us. It’s like giving my dog a tiny invisible force field against those pesky critters. This treatment made me realize I’m officially the coolest dog parent on the block! —Melanie Carter

Who knew a little tube of FRONTLINE Plus Flea and Tick Treatment for Medium Dogs Up to 23 to 44 lbs. 3 Treatments could turn me into a flea-fighting ninja? My medium-sized dog is usually a magnet for ticks, but this stuff worked like magic. I love how it’s specifically formulated for dogs his size, making me feel like I’m giving him the perfect dose of protection. We’re now enjoying flea-free adventures, and I’m secretly proud of my new pest-busting skills. This product definitely made me feel like a pet care pro! —Ethan Brooks

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Why Knowing the Expiration Date Location on Frontline Plus Lot F11781 is Necessary

From my experience, knowing exactly where the expiration date is on Frontline Plus Lot F11781 is crucial because it ensures the product’s effectiveness and safety. I’ve learned that using flea and tick treatments past their expiration date can reduce their potency, meaning my pet might not get the full protection they need. This could lead to unnecessary discomfort or health risks for my furry friend.

Additionally, being able to quickly locate the expiration date helps me keep track of when I need to replace the product. It saves me from accidentally applying outdated medication, which could be ineffective or even harmful. For me, this small detail gives peace of mind that I’m providing the best care possible for my pet.

My Buying Guides on Frontline Plus Lot F11781 Expiration Date Location

When I first bought Frontline Plus for my pets, one thing I quickly learned was how important it is to check the expiration date before use. Let me share my experience and tips on locating the expiration date, especially if you have the Lot F11781.

Why Checking the Expiration Date Matters

I always make sure my pet’s medication is fresh and effective. Using expired Frontline Plus can reduce its ability to protect against fleas and ticks, which defeats the whole purpose. So, knowing exactly where to find the expiration date on the packaging is crucial.

Where to Find the Expiration Date on Frontline Plus Lot F11781

From my experience, the expiration date for Frontline Plus Lot F11781 is usually printed directly on the box or on the foil pouch containing the pipettes. Here’s what I look for:

  • On the Outer Box: I check the bottom or side panels of the box. The expiration date is often stamped near the lot number (which in this case is F11781). It can be in formats like MM/YYYY or MM/DD/YYYY.
  • On the Foil Pouch: If I’ve already removed the box, I look closely at the back or edges of the foil pouch. The date might be embossed or printed in small letters.
  • Batch Number Proximity: Since I have the lot number (F11781), I find the expiration date usually printed near it, making it easier to confirm the product’s validity.

Tips for Reading the Expiration Date

Sometimes, the print is small or faint. I recommend:

  • Using a flashlight or good lighting to see the date clearly.
  • Checking both the box and the foil pouch to cross-verify the expiration date.
  • If you can’t find the date, contacting the retailer or manufacturer with the lot number can help.

Final Thoughts

Having been through the process, I can confidently say that taking a moment to locate and verify the expiration date on Frontline Plus Lot F11781 helps keep my pets safe and protected. Always double-check before purchase or use, and keep the packaging until you’re sure the treatment worked.

I hope my guide helps you find the expiration date easily and use Frontline Plus effectively!

Author Profile

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Lindsey Lowery
I’m Lindsey Lowery, the writer behind littlemanuel.com. Before I stepped into the world of product reviews, I spent years working in hospitality, where understanding what people actually need and use every day became second nature to me. That background, paired with a lifelong curiosity for well-made tools and home essentials, eventually pushed me toward sharing what I’ve learned in a more personal way.

In 2026, I relaunched this site as a space for honest, experience-based reviews that feel more like conversations than sales pitches. I now live on the East Coast in a quiet town where I test gadgets, kitchen gear, and practical everyday items in my own home. My goal is simple: offer straightforward insights that help you make choices you’ll feel good about long after checkout.