Hartz UltraGuard Plus Drops for Cats, Over 5-Pound
Original price was: $13.44.$12.67Current price is: $12.67.
Price: $13.44 - $12.67
(as of Nov 29, 2025 09:41:13 UTC – Details)
Hartz UltraGuard Plus Topical Flea and Tick Prevention for Cats and Kittens 12 weeks and older, is a monthly treatment that rapidly eliminates fleas within 15 minutes. Kills fleas, Brown Dog and Deer Ticks, flea eggs and repels mosquitoes for 30 days. Features the patented Pro-cision Flo applicator system that penetrates pet hair allowing for application of treatment at skin level. Quick-drying formula stays on and does not rub off. Package contains 3 monthly applications.
Is Discontinued By Manufacturer ā : ā No
Product Dimensions ā : ā 1 x 3.7 x 5.9 inches; 0.01 ounces
Item model number ā : ā 3270010844
Date First Available ā : ā October 9, 2008
Manufacturer ā : ā Hartz
ASIN ā : ā B001HWEC2C
Best Sellers Rank: #2,741 in Pet Supplies (See Top 100 in Pet Supplies) #15 in Cat Flea Drops
Customer Reviews: 3.9 3.9 out of 5 stars 12,299 ratings var dpAcrHasRegisteredArcLinkClickAction; P.when(‘A’, ‘ready’).execute(function(A) { if (dpAcrHasRegisteredArcLinkClickAction !== true) { dpAcrHasRegisteredArcLinkClickAction = true; A.declarative( ‘acrLink-click-metrics’, ‘click’, { “allowLinkDefault”: true }, function (event) { if (window.ue) { ue.count(“acrLinkClickCount”, (ue.count(“acrLinkClickCount”) || 0) + 1); } } ); } }); P.when(‘A’, ‘cf’).execute(function(A) { A.declarative(‘acrStarsLink-click-metrics’, ‘click’, { “allowLinkDefault” : true }, function(event){ if(window.ue) { ue.count(“acrStarsLinkWithPopoverClickCount”, (ue.count(“acrStarsLinkWithPopoverClickCount”) || 0) + 1); } }); });
Only for cats and kittens 12 weeks and older weighing 5lbs and over
3 Monthly Treatments
Rapidly eliminates fleas
Lasts for 30 days
Kills fleas ticks and flea eggs
Kills and repels mosquitoes
Prevents re-infestation for up to 30 days
3-Monthly treatments
Customers say
Customers report mixed experiences with the flea and tick prevention product, noting it works well for indoor cats but only lasts about two weeks. While some say it eliminates fleas completely, others report it doesn’t kill them at all. The product receives mixed reviews for its quality and value, with some finding it good for the price while others consider it a waste of money. Moreover, customers report serious health concerns, including severe skin irritation, chemical burns, and making cats sick.
13 reviews for Hartz UltraGuard Plus Drops for Cats, Over 5-Pound
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Original price was: $13.44.$12.67Current price is: $12.67.
Joel Monterrey –
Affordable but not the most effective. Great if you don’t have a persistent problem with fleas
If you live in the US South, I don’t believe this will be strong enough. From what I read, enough fleas can become immune to Etofenprox, the active ingredient in this product, whereas a combination of Imidacloprid and Pyriproxyfen are much more effective because they use unique biological attacks on fleas and the growth cycles. Others include Selamectin (Revolution) or Fluralaner (Bravecto).Feature Etofenprox Imidacloprid + Pyriproxyfen Selamectin FluralanerKills Adult Fleas ā Yes ā Yes ā Yes ā YesKills Flea Eggs & Larvae ā No ā Yes ā Yes ā No (but prevents reinfestation)Tick Protection ā No ā No ā ļø Limited ā StrongMite Protection ā No ā No ā Yes (ear mites, sarcoptic mange) ā NoWorm Protection ā No ā No ā Yes (roundworms, hookworms) ā NoHeartworm Protection ā No ā No ā Yes ā NoDuration ~1 month ~1 month ~1 month ~12 weeksBest For Basic flea control, but resistance issues Stronger flea control, prevents reinfestation Broad parasite control, including worms & mites Long-lasting flea & tick control
sandinky –
Works almost instantly
This product has always worked on my pets and even the stray cat who invited himself into my house one day and has since become my pet. The price is awesome for how long it lasts (about a month) and itās pretty safe as I havenāt seen any side effects like skin irritation. It kills the fleas almost instantly and provides relief from itching and scratching.
Leyla Gold –
LISTEN TO ME AND DO NOTTTT ORDER THIS!!!
If youāre thinking of buying this I URGE YOU NOT TO! PLEASE DONāT BE LIKE ME AND BUY THIS BECAUSE OF THE PRICE! THIS COMPANY HAS LAWSUITS AGAINST THEM AND PEOPLEāS PETS HAVE DIED AFTER USING THEIR PRODUCTS!My cat got fleas for the first time so I ordered this for her before I saw some bad reviews and then decided to go with a better (more expensive) treatment I found on Petco. I ran out of the Petco treatment after 2 months so tonight I decided to use this one since I still had it. I shouldāve avoided it the second I realized how strong the scent is. Itās extremely strong and it immediately bothered my cat and after some time it gave me a headache. I put a bit of the treatment on the back of my hand to test it and after 5 minutes it felt fine so I put it on my cat as instructed. She immediately seemed bothered by the smell. After a minute she began sneezing and scratching and trying to shake off the product. After a few more minutes she started running around like crazy, yowling, and was very hard to calm down. I IMMEDIATELY REGRETTED USING IT. After an hour, she has now calmed down and is sleeping. Her eyes seem teary. I contacted Amazon about this twice and apparently they canāt help me because I placed the order so long ago. They also have been unable to get me in contact with the manufacturer. I decided to call the number on the packaging and left a message since I called after business hours. I left them my number to call back. I also emailed the address they mention when you call that number but I got an alert that the email cannot be found and cannot receive other emails. This company is HIGHLY SUSPICIOUS. They do not care about your pets and using their products might HARM YOUR PET! PLEASE STAY AWAY FROM THEM. Amazon NEEDS to stop selling thus companyās products.
Kim Scheffer –
Good product
I have an outside cat and this stuff worked great on him all summer
Anna B. –
No negative reactions from my cats
I use this on all my barn cats, and itās worked great for us! I never see fleas on them, and only occasionally spot a tick ā usually after the productās effective period has ended. Itās easy to use, and none of my cats have ever had a negative reaction to it. Overall, a reliable product that keeps my barn cats flea and tick free!
Celestial Cat –
Fair try
To be fair, I donāt think any of these products can really help, but this one does a fair job.Flea combing is helpful (outside with a plastic container filled with hot, hot water and a lid). Then disposing of said container.
Angela Dyer –
Purrfection
Keeps my furbabies flea & tick free & we have one avid outdoors kit
Maresa heeks –
Ann
It was ok for my cats, but not the best.
RIC –
This product is too aggressive. The day after use my cat developed a severe skin rash on the application area as if the skin had been burnt. The cat had to go thru cortisone treatment to help clearing the rash.After the rash cleared the cat was left with thickened skin where the product was applied.
aj –
This product is so horrible it burned my catās skin and left a bald spot. This is my biggest regret. My cat was suffering from burned skin for 2 weeks. Pls do not use this product. This should be banned from any platform.
Mahitab –
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user-M3FKT41 –
Cats still have fleas. The products smells really strong and the cats did not like it, other brands do not seem to bother them when applied, this one did, for both cats.I brush them daily with a flea comb and I still find fleas.Avoid.