Hartz

Hartz UltraGuard Flea Tick Collar for Dogs and Puppies 7 Month Flea and Tick Protection and Prevention Per

151+ bought in the past month

$3.78

About this item

  • Fresh scented
  • Kills and repels fleas and ticks for 7 months. Can be worn simultaneously with your dog's regular collar
  • Water-resistant design won't cause loss of effectiveness if your playful pup takes a stroll in the rain
  • Fits dogs with necks that measure up to 20 inches
  • For use on adult dogs and puppies 12 weeks of age and older
  • Do not use this product on dogs 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.
$3.78

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Product details

BrandHartz
Item FormCollar
ScentFresh scented
Item Weight0.11 Ounces
Item Volume0.67 Fluid Ounces
Allergen InformationLatex
Age Range (Description)All Life Stages
UPC032700804848

Technical specifications

item_weight0.11 Ounces
manufacturerHartz
item_model_number032700804848
date_first_availableApril 28, 2005
item_package_dimensions_l_x_w_x_h5 x 3.74 x 0.83 inches
item_dimensions_lxwxh0.75 x 3.75 x 5 inches
brand_nameHartz
target_audience_keyworddogs, house-cats
directionsRemove collar from package, unroll and stretch to activate
model_nameHartz UltraGuard
colorWhite
sizeUp to 20 Inch Neck (Pack of 1)
age_range_descriptionAll Life Stages
number_of_items1
styleUltraGuard
breed_recommendationAll Breed Sizes, Medium, Small
included_components7 month Collar (1)
specific_uses_for_productActive, Outdoor, Parasites
is_discontinued_by_manufacturerNo
product_dimensions0.75 x 3.75 x 5 inches; 0.11 ounces
best_sellers_rank#1,356 in Pet Supplies ( See Top 100 in Pet Supplies ) #3 in Dog Flea Collars

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Customer reviews

4.113,958 ratings

Customers say

Customers find the flea collar easy to use and appreciate its value for money, with one noting it's particularly suitable for farm dogs. Customers disagree on the collar's durability, with some saying it lasts a long time while others find it doesn't last. Customers have mixed experiences with allergic reactions, with some reporting their dogs are less itchy while others experienced rashes.

★★★★★

Effective and affordable.

Scott RosenbergDecember 26, 2025

I bought this for my dog, it got rid of the fleas, but I doubt the zeven moth protection as the last one lasted maybe 4 months before the fleas returned Read more

★★★★★

Works great, just stretch the entire length first to activate before putting on animal.

Billy A.December 21, 2025

I keep one of these on each of my outside dogs and they never have any ticks or fleas on them. Just remember to stretch it out a little to activate it before you put it on your dog. The first time I put one I overlooked this and was wondering why it wasn't working all that great then I got another and read the box and seen where it said to stretch the entire length first to activate after that no problems works like a charm. Read more

★★★★★

Saves you money and works!

Elise JacksonDecember 13, 2025

Works great for my baby girl! We live in an apartment complex with other dogs. So far she has been flea free for a couple months now. Beats paying lots of money at the vet office. Will buy again! Read more

★★★★☆

Flea collar

Carol L. BookDecember 22, 2025

Works the way it's supposed to. Read more

★☆☆☆☆

Beware of chemicals in these products.

Jeremy M.December 30, 2025

I will never buy this again. I decided to try Hartz Ultra Guard because it had good reviews and a lot less than the other natural flea collars I have used in the past. Worst mistake ever and cost me more money in the end. I have an 8 year old Golden Doodle and I thought we were going to lose him. The chemicals in the flea collar made my dog sick. He went from running around full of energy to not eating and could barely move within a few days. I had to clean the dog multiple times because he did not have the energy to stand and use the bathroom. After taking him to the vet and running tests we finally figured it out. Its been 72 hours and he is finally able to eat about 25% of his normal amount and use the bathroom like normal. Spent Christmas day crying because I thought I was going to lose my best friend. This was not worth the $20 savings. I am sure this is not a normal occurrence but need to be mindful if your dog has or may have allergies. I hope this helps other dog owners avoid an emotional roller-coaster. Read more

★★★☆☆

Helps but not 100% effective.

noBSSeptember 29, 2025

I’ve used these and other brands for many years on outside short haired dogs. Sometimes you get ones that work great and other ones that are absolutely worthless. One time a tick actually bit and thrived right under a new collar.. I don’t know if one brand is better than the next, it seems to be a crap shoot on brands and batches but I keep buying them. I’ve tried the drops twice with no success but I’ve heard the vet’s version works great. Read more

★★★★★

Experimental purchase

CustomerSeptember 19, 2025

I’m giving this a five stars in hopes of this flea collar doing it’s job, I had to give a rating even though results are yet in…that said, this collar is not going around my pups neck, but into the canister of my vacuum cleaner. Fleas are everywhere this time of year. I’ve been told by folks who don’t have pets that they have seen fleas indoors and outdoors. I live in San Diego and evidently from what the Vets tell me we have one of the highest infestations in the country due to our climate..that being said both of my pups are medicated, I vacuum everyday. One of my girls is a Pitty and of course has skin allergies like many do. She is allergic to flea saliva🥹.. One day recently had her at the Vets who mention that putting a piece of a flea collar can help to reduce the number of fleas caught in canister that would have potential to escape back into the living space..hence the reason for my purchsase. The price is right so we will see how well that works. Read more

★★★★★

Good dog collar

Mama89December 19, 2025

Good collar flea's. Smell is pretty strong when first opened but that's expected. Read more

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