Hartz UltraGuard Flea & Tick Collar for Puppies & Dogs, 1 Collar (7-mos. supply)

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Help your puppy pal fight pesky fleas and ticks with this Hartz UltraGuard Flea & Tick Collar! Specially designed for puppies, this collar can help combat fleas and ticks for up to 7 months. It’s completely adjustable for a comfortable fit and it’s also water resistant, so your paw-tner can stay protected while playing in the rain. When it comes to flea and tick control, Hartz has your pal covered!

Key Benefits
  • Can combat both fleas and ticks for up to 7 months, giving your pal the long-lasting protection she needs.
  • Water-resistant collar continues to fight fleas when wet.
  • Kills through contact—eliminates fleas and ticks.
  • This collar is designed for puppies.
  • Proudly made in the USA.

Use only on dogs. Do not use on puppies under 12 weeks of age.
No toy is indestructible. Supervise your pet when using since small parts can present a choking hazard or internal blockage. Discontinue use if the toy is damaged. Keep out of reach of children

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.

See all items by Hartz

  • Item Number
  • Weight
    1.76 ounces
  • Usage
  • Lifestage
  • Breed Size
    All Breeds
  • Collar Type
    Flea & Tick
  • Product Form
  • Health Condition
    Fleas, Ticks

Active Ingredients: Tetrachlorvinphos 14.55%.


Remove collar from package, unroll and stretch to activate insecticide generator. As the collar begins to work, a fine white powder will appear on the surface.

Do not unroll collar until ready to use. Place the collar around the dog's neck, adjust for proper fit and buckle in place. The collar must be worn loosely to allow for growth of the dog and to permit the collar to move about the neck.

Generally, a properly fitted collar is one that, when fastened, will snugly slide over the dog's head. Leave 2 or 3 inches on the collar for extra adjustment and cut off and dispose of the extra length.

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.


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

Rating: 1.5 of 5 stars 4 Reviews 4 Reviews 1.5 out of 5 Stars

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75% Recommend

75% of reviewersrecommend this product

Rating: 1.5 of 5 stars 1.5 / 5

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4 Reviews

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  • 1 out of 5 stars

    not good good if you have two puppys,

    By 2puppies on Sep 30, 2021

    Well not good for two puppies, chewed the plastic connector apart in just a few days, no worries went to the vet, they are in great shape.

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  • 1 out of 5 stars

    Waste of time and money

    By Beware on Aug 31, 2021

    Does not work.. i came to the conclusion that flea collars only work around the neck area and not the whole body because this didnt stop the fleas from my dogs chest, back, and butt area

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  • 3 out of 5 stars

    Flea collar

    By Pattycake on Sep 16, 2021

    My puppy still has fleas after wearing the collar for 2 weeks. She is doing a lot of scratching and she seems to be miserable.

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  • 1 out of 5 stars

    Didn't work at all

    By Hartz on Aug 20, 2021

    I usually buy seresto for my dogs and decided to try something new. They didn't work at all.

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