

🐾 Shield your best friend from pests—because they deserve ultra-guarded adventures!
Hartz UltraGuard Dual Action is a 6-month topical flea and tick treatment for dogs 31-60 lbs, delivering fast, full-body protection that kills fleas, flea eggs, and ticks on contact. Its unique formula breaks the flea life cycle monthly to prevent re-infestation, ensuring your dog stays pest-free with just one easy application per month.






| ASIN | B08TRR5C1J |
| ASIN | B08TRR5C1J |
| Age Range Description | All Life Stages |
| Best Sellers Rank | #5,318 in Pet Supplies ( See Top 100 in Pet Supplies ) #24 in Dog Flea Drops |
| Brand Name | Hartz |
| Breed Recommendation | Large |
| Color | 6 Count |
| Customer Reviews | 4.3 4.3 out of 5 stars (6,133) |
| Date First Available | March 1, 2021 |
| Date First Available | March 1, 2021 |
| Directions | Remove one applicator tube from the package and hold in an upright position pointed away from your face. Pull off cap. Turn the cap around and place on top of tube. Simply press cap down to break the seal of the tube. Remove cap carefully. Position the tip of the tube on the dog's back between the shoulder blades. Use the tip of the tube to part the dog's hair so that the product will be applied a… |
| Included Components | 6 Topicals |
| Item Dimensions LxWxH | 0.88 x 4.88 x 6.69 inches |
| Item Package Dimensions L x W x H | 6.65 x 4.25 x 1.46 inches |
| Item Weight | 0.4 Ounces |
| Item model number | 032700120412 |
| Item model number | 032700120412 |
| Manufacturer | Hartz |
| Manufacturer | Hartz |
| Model Name | Dual Action |
| Number of Items | 6 |
| Product Dimensions | 0.88 x 4.88 x 6.69 inches; 0.4 ounces |
| Size | 31-60 Pounds |
| Specific Uses for Product | Active, Coat, Outdoor, Parasites |
| Style | 6 Month |
| Target Audience Keyword | dogs |
J**Z
Easy to use
This has made a huge difference in the fleas that the dogs have gotten. It is easy to use even when they are unsure about what I am doing to them. It has not bothered either of my dogs. I will keep using this because it actually works.
E**R
Works and isn’t expensive!
So my dog is a Jack Russel mix so he has very dense fur. I took him to my parents house with a few acres and noticed before we left that he had gotten fleas from the field! I immediately bathe him and once he was dry, I applied this and haven’t seen a flea since. These are so much more affordable than all of the other brands. I won’t use any other flea drops.
J**.
Works better than more expensive treatments, even on 4 lb dog!
I swear by this flea treatment and feel much more comfortable giving it to me dogs, even a mini 4 pounder *only used half of a tube....still monitor, as opposed to the stronger advantix or similar treatments and it's a fraction of the cost of those or three vent preventative (although that is the best option as it also includes heartworm preventative but this is great if you cant afford the vet or don't have money for expensive treatments. This actually worked better even than some of the more expensive ones I've tried for a really tough case of the fleas on a pomsky (long, thick hair that can't be shaved!). I used this and diatomaceous earth sprinkled in the yard, on my dog (food grade only) and sprinkled on carpet, couches, dog beds, etc. Using an accordian style contraption that came with it and put a light plume into the air, covering everything. Apparently it acts like glass to fleas and flea larvae. You will have to repeat though as it won't touch the eggs.
T**R
Good value for money
These flea treatments give you the value for your money, relief for you pet, and leave you worry free knowing this is a reliable brand. I took a dog in and gave her this treatment and it gave me no issues whatsoever. She is prone to dry skin but this did not affect her. also considering she was outside most of the time I'd say this is a decent product considering it has lasted the full month. If you are looking for a affordable flea treatment try this one.
C**H
Keeps flies off my dog.
I had a 225 pound Newfoundland that was bit by a black fly under her tail. The poison the flies carry is very dangerous to dogs. The poison got into her spinal fluid & killed her in about 12 hours. I was devastated. These treatments keep the flies off my dogs. I highly recommend these if you have long haired dogs that these flies tend to target.
A**Y
I'm on the fence about this product.
These drops seem to work at first but definitely didn't last a whole month . Maybe 2 weeks . My dogs are house broken so they go out to potty and naturally pick some fleas up from the neighborhood strays . These drops dont seem to repel or get rid of them after week 2
D**H
The 50/50 split
So it looks like this treatment only works with a certain type of chemistry within your dog and then it doesnt work at all for others. That is my hypothesis because I cant imagine the half that left a positive review were all lying in these reviews. For my girl I bought the largest size they have and it goes for up to twice her weight so i shook it good and only put half on her since it has such a high weight allowance. Well first off it wanted to sit on top of her skin it wouldn't absorb into her. It sat there on her like this for over an hour until it was nearly bed time and she sleeps in our bed so I wasnt having that in my bed even if she does stay at my feet. So I ended up having to try to smear it into her fur with a paper towel. Then I noticed this is more of a repellent than it is a killer. So keep that in mind. You'll want to have your pet outside when you apply this if you think they could possibly have gotten a flea or 2 because if so then they're going to jump off your dog inside your house and who wants that? Then you'd need to treat the whole house with borax. Which I don't do bugs at all ever so the minute I saw 1 flea jump off of her from this mess I ran to the store for borax automatically. Anyways moving on then I noticed a flea that wasnt jumping off he didnt seem bothered by it as the one was that did jump off. Lol so apparently that 50/50 split I mentioned at the start of my review fits perfectly as my ending too. I noticed this only repelled about half the fleas so yeah it must come down to each fleas certain type of internal chemistry as to whether or not this works. 🤣 full circle
E**E
Apply monthly an on a timely basis
They are flea free until I skip a month
Trustpilot
2 months ago
1 month ago