Hartz UltraGuard Flea & Tick Collar for Cats, 1 Collar (7-mos. supply)
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Tell uninvited to guests to “bug off” with the Hartz UltraGuard Flea & Tick Collar for Cats. A convenient alternative to topical flea applications, this collar starts working fast to kill and repel fleas and ticks. It also prevents flea eggs from hatching, which stops the flea cycle by preventing re-infestation. And as an added bonus, the breakaway design easily comes off in the event your cat gets caught on something, so you never have to worry about him choking or getting trapped. The best part? It works for seven long months, even if it gets wet, so you can go worry-free for more than half a year.
Key Benefits- Water-resistant flea and tick collar is an easy alternative to traditional topical flea treatments.
- Works for an impressive 7 months to effectively kill and repel fleas and ticks.
- Also prevents flea eggs from hatching to stop the flea life cycle and prevent re-infestation.
- Breakaway design will come apart if your cat gets caught on something.
- Adjustable design can be cut to fit your cat’s neck, and it features a clean, fresh scent.
HAZARDS TO HUMANS: Harmful if swallowed. Avoid breathing vapors. Avoid contact with eyes. Wash hands with soap and water after using. DO NOT LET CHILDREN PLAY WITH THIS COLLAR.
HAZARDS TO DOMESTIC ANIMALS: Avoid contact with eyes. If in eyes, flush with water. Do not use on any meat or milk producing animals. Sensitivities may occur after using ANY pesticide product for pets. If signs of sensitivity occur, bathe your pet with mild soap and rinse with large amounts of water. If signs continue, consult a veterinarian immediately.
FIRST AID: Call a poison control center or doctor immediately for treatment advice. IF SWALLOWED: Have person sip a glass of water if able to swallow. Do not induce vomiting unless told to do so by the poison control center or doctor. Do not give anything by mouth to an unconscious person. IF INHALED: Move person to fresh air. If person is not breathing, call 911 an ambulance, then give artificial respiration, preferably by mouth-to-mouth, if possible. IF IN EYES: Hold eye open and rinse slowly and gently with water for 15 - 20 minutes. Remove contact lenses, if present, after the first 5 minutes, then continue rinsing eye.
Important Information
Fleas rise to the top of your pet's coat as they die, so consider it a triumph if you start seeing more fleas at first, after treating your pet. If you’re still seeing fleas after application, it may be because your pet has picked up new fleas from the environment, which may include other pets, surfaces and outdoor areas. It may take up to 30 days to break the entire flea life cycle. Additionally, you should also treat sources of new fleas (i.e., carpet, yard, etc.) to ensure complete flea control.
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Item Number122141
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Dimensions5.9 x 3.8 x 0.1 inches
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Weight1.76 ounces
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UsageTreatment
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LifestageAdult
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Collar TypeFlea & Tick
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Product FormCollar
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Health ConditionFleas, Ticks
Directions for use
- Do not use on kittens under 12 weeks old.
- Do not unroll collar until ready to use.
Remove the collar from the package, unroll and stretch to activate insecticide generator. As the collar begins to work, a fine white powder will appear on the surface.Place the collar around the cat's neck, adjust for proper fit, and buckle in place. The collar must be worn loosely to allow for growth of the cat and to permit the collar to move about the neck. A properly fitted collar is one that, when fastened, will snugly slide over the pet's head. Leave 2 or 3 inches on the collar for extra adjustment cut off and dispose of the extra length. Consult a veterinarian before using this product on debilitated, aged or medicated animals. If used on pregnant or nursing cats, do not replace collar until the kittens are at least 12 weeks old. Sensitivity may occur after using ANY pesticide product for pets. Some animals may become irritated by any collar if it is applied too tightly. If this occurs loosen the collar. If irritation continues, remove the collar from the animal. If signs of sensitivity occur, remove the collar and bathe your pet with mild soap and rinse with large amounts of water. If signs continue, consult a veterinarian immediately. Do not use this product on animals simultaneously or within 30 days before or after treatment with or exposure to cholinesterase inhibiting drugs, pesticides or chemicals. However, flea and tick collars may be immediately replaced.
How it works
The collar will begin to kill fleas, ticks and flea eggs and larvae immediately. Its full protection against harder to kill ticks will be built up within a few days after being placed on the pet. For continuous flea and tick protection under normal conditions replace the collar every seven months. Under conditions where pets are exposed to severe flea and tick infestations, it may be necessary to replace the collar more frequently. Wetting will not impair the collar's effectiveness or the pet's protection. If the pet goes swimming or is out in the rain it is not necessary to remove the collar. The collar may be worn with a regular collar.
Storage and Disposal
Do not contaminate water, food or feed by storage and disposal.
- Pesticide Storage: Store this product in a cool, dry place that is inaccessible to children.
- Pesticide Disposal: If empty: Nonrefillable container. Do not reuse or refill this container. Offer for recycling, if available. If partly filled: Call your local solid waste agency for disposal instructions. Never place unused product down any indoor or outdoor drain.
Caution
Harmful if swallowed or absorbed through skin. Causes moderate eye irritation. Avoid contact with eyes, skin or clothing. Wash hands thoroughly with soap and water after handling and before eating, drinking, chewing gum, using tobacco or using the toilet.
First Aid
Contains an organophosphate that inhibits cholinesterase.
- If swallowed: Call a Poison Control Center or doctor immediately for treatment advice. Have person sip a glass of water if able to swallow. Do not induce vomiting unless told to do so by a Poison Control Center or doctor. Do not give anything by mouth to an unconscious person.
- If on skin or clothing: Take off contaminated clothing. Rinse skin immediately with plenty of water for 15-20 minutes. Call a Poison Control Center or doctor for treatment advice.
- If in eyes: Hold eye open and rinse slowly and gently with water for 15-20 minutes. Remove contact lenses, if present, after the first 5 minutes, then continue rinsing eye. Call a Poison Control Center or doctor for treatment advice. Have the product container or label with you when calling a Poison Control Center or doctor, or going for treatment.
Where is this product sourced from?
We source all our products from manufacturer approved distributors or directly from the manufacturers. Chewy takes pride in ensuring that our furry friends’ wellbeing is always our top priority. We have worked hard to partner with all of the manufactures to deliver 100% authentic products

Hartz Commitment to You and Your Pets
Hartz treasures the bond between you and your pet, and they're committed to providing you with products designed to protect and rid your pets of fleas and ticks year-round. Make your pet one of the 5 million furry family members Hartz helps keep pest-free and happy every year!
UltraGuard Collars for Cats
Fleas and ticks aren’t just an annoyance for your cat, they can also transmit diseases that jeopardize the health and well-being of your furry friend. Hartz UltraGuard Flea and Tick Cat Collars provide active, full body flea and tick control for your kitties, to protect against biting pests and help prevent problems before they can take hold.

Affordable Protection that Performs
Hartz UltraGuard Collars provide head-to-tail protection from fleas and ticks for up to 7 months. They’re easy to put on and have a water-resistant design that stays effective even after rain showers and baths.
FULL BODY PROTECTION
One collar provides full body protection for up to 7 months, protecting through warm weather and cool seasons when fleas can surprise you.
TIME-RELEASE ACTION
Active ingredients in the collar release slowly over your cat’s entire body surface, providing continuous coverage for 7 months.
EASY AND NON-GREASY
Lasting protection is as easy as fastening a collar, and this non-greasy collar can be worn with a regular collar, too.
WATER RESISTANT
A run through a puddle or a bath won’t diminish the effectiveness of this collar. It’s water resistant, to go wherever your cat wants to go.
Choose the Collar That’s Right for You
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ULTRAGUARD FLEA & TICK CAT COLLAR |
ULTRAGUARD PLUS FLEA & TICK COLLAR |
ULTRAGUARD PRO FLEA & TICK COLLAR |
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KILLS FLEAS & TICKS |
Yes |
Yes |
Yes |
KILLS LARVAE |
No |
Yes |
Yes |
CONTAINS REFLECTIVE TECHNOLOGY |
No |
No |
Yes |
REPELLANCY |
No |
Yes |
Yes |
About Hartz
Hartz has been delivering exceptional consumer pet care products for over 90 years. Their goal is to provide innovative, trustworthy and affordable products that strengthen the bond between pets and people, and to offer the knowledge and support people need to better care for their pets. Their mission is a world where every pet can lead a healthy, happy and long life in a loving home.

Customer Reviews
70% Recommend
70% of reviewersrecommend this product
You've Already Reviewed This Item
188 Reviews
Showing 1-10 of 188 Reviews
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Working well, cats don't seem to mind wearing them
By Raquelle on Jan 26, 2021
The flea collars seem to work well, no side effects, and kitties don't seem to mind after the initial first few minutes. I switched to using flea collars after an older kitty starting having seizures the day I would apply the spot on flea treatment to any of the pets in the home. (We also have upped our vacuuming for a while and washed bedding to prevent further infestation, as it takes a multi-faceted approach to eliminate fleas) We're all happier.
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It does work
By Samwise on Jan 8, 2021
I have 3 cats but one, Sam, is unable to use any brand of flea and tick that you squeeze on. He loses hair and scabs in the area it's applied. So I tried this as the seresto is so expensive. Sam is an indoor cat but he goes into my basement (not a livable area) that does get a mouse from time to time. He has had this collar on for 6 months and no fleas or ticks.
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It works and is easier to use on geriatric cats
By Erin on Oct 19, 2020
My cat is 18 years old and somehow managed to escape the house. He came home covered in fleas. I was afraid to use any oral or topical flea medication due to his advanced age so I bought this collar for him. I have 3 other cats between the ages of 7 and 11 and a dog that is 6 so obviously I was concerned about a flea infestation. After putting the collar on I saw a lot of fleas around his neck and under his chin. After using a flea comb I realized the fleas were either dead or almost dead. My other pets are getting the topical and I bought products to clean the carpets and upholstery but so far I have not seen a single flea anywhere other than in my 18 year olds blankets. I’m not a fan of the My cat is 18 years old and somehow managed to escape the house. He came home covered in fleas. I was afraid to use any oral or topical flea medication due to his advanced age so I bought this collar for him. I have 3 other cats between the ages of 7 and 11 and a dog that is 6 so obviously I was concerned about a flea infestation. After putting the collar on I saw a lot of fleas around his neck and under his chin. After using a flea comb I realized the fleas were either dead or almost dead. My other pets are getting the topical and I bought products to clean the carpets and upholstery but so far I have not seen a single flea anywhere other than in my 18 year olds blankets. I’m not a fan of the collars but for a geriatric cat this is a really good option. … more
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These collars are the worst collars!
By Principessa on Jan 20, 2021
These collars are horrible, they don't work! When my cats wear them, they have even more fleas! I can't believe it!
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Sufficient!
By BlackDoll on Oct 15, 2020
My fur ball is 1 yr. old and this is the only flea collar he has ever had. He's never had fleas so it works for us. He's mainly an indoor cat but like most he does escape into the summer sun from time to time. Fav spot is in the lawn. This protects him from creepy crawlers.
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My cat's love the the protection
By Frankjr59 on Jan 27, 2021
My three cats love the protection momma and two boys tiger winni3 and Lucas
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Satisfied customer
By Ritabell on Jan 13, 2021
I am satisfied with this item because it works for my cat and it is easy to use
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Dont waste your money.
By Seamus on Dec 9, 2020
Bought for my 6 month old kitten. Stretched and put on. 3 weeks later and he still has fleas. Indoor only cat.
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Product was broke
By Becky on Nov 13, 2020
When I took the product out of the box to activate it, it was broke and was unable to be fixed. I would like another one or at least a credit.
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Reliable as always.
By Pita on Feb 9, 2021
I got exactly what I ordered in the time frame you promised!