Vectra 3D Flea & Tick Spot Treatment for Dogs, 56-95 lbs, 6 Doses (6-mos. supply)

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About This Item

Details

  • This monthly treatment helps protect dogs ages 8 weeks and older weighing 56–95 pounds from fleas, ticks, mosquitoes, lice, mites plus biting and sand flies—excluding mange mites.
  • Starts to reduce flea bites in five minutes and kill fleas in four hours.
  • Works to repel and kill fleas, ticks and mosquitoes–no biting required!
  • This easy-to-apply topical treatment is quick drying, fragrance free, non-greasy and waterproof after 24 hours.
  • No prescription required.

Ingredients

Instructions

FAQ

Learn More About Vectra From Our Team of Experts
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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Questions & Answers

11 Customer Questions

DOES VECTRA HAVE TO HAVE A PRESCRIPTION FOR DOG

Answer by Chewy • Aug 29, 2019
This product does not require a prescription.

does this protect against deer ticks or how many different kinds of ticks and fleas does it protect against?

Answer by Chewy • Mar 25, 2021
This treatment is effective on all fleas and ticks. VECTRA 3D protects because of the triple-action formula of Dinotefuran, Pyriproxifen and Permethrin. These ingredients work together to kill fleas and ticks on contact and repel these dangerous parasites. Once they land on your dog, the parasites come into contact with the treated skin and hairs. The more they move on the dog to find a location to bite, the more they are exposed to the active ingredients of VECTRA 3D and the sooner they are affected. In ticks, VECTRA 3D causes first a “hot foot” reaction. The sensors in the legs of these parasites are very sensitive to permethrin and make the parasite run off the dog (hot foot effect). They are physically compelled to crawl back up the fur, away from the skin, without biting. In fleas, VECTRA 3D quickly disrupts the feeding behavior. Within 5 min after infestation and once the product has translocated, feeding is strongly reduced when compared to untreated dogs. Fleas are quickly knocked down and start falling off the animal without possible recovery, thanks to the synergy between dinotefuran and permethrin.

Is this product safe to use in a household that has cats?

Answer by Chewy • Mar 19, 2020
Keep out of reach of children and cats.

Can I use this on a pregnant dog?

Answer by Chewy • Mar 20, 2020
This flea and tick treatment should not be used on debilitated, aged, medicated, pregnant or nursing dogs, or dogs known to be sensitive to pesticide products without first consulting a veterinarian.
Reviews
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4.5
Rated 4.5 out of 5 stars
760 Ratings
Terms & Conditions

Customers Mention

Chewy identifies key considerations with the help of artificial intelligence and our veterinarians.

Ease of Use

84% Positive

Effectiveness

86% Positive

Ingredients

82% Positive

Long-Term Benefits

86% Positive

288 Customer Reviews

Always consult a veterinarian about your pet’s health needs. Customer reviews should not be used as medical advice.

Rated 1 out of 5 stars
By Georgia on Dec 23, 2025

Yikes

Vectra used to be my go to flea treatment for years. Not sure what changed but all 3 of my dogs and a dog I dog sit have had bad reactions to it. All were extremely

Vectra used to be my go to flea treatment for years. Not sure what changed but all 3 of my dogs and a dog I dog sit have had bad reactions to it. All were extremely itchy and one dog had a burn all the way down his back into his tail. After 10 days I had to bathe them to get it off. I hate to write negative reviews but this time was necessary.

Rated 5 out of 5 stars
By Rebecca on Nov 12, 2025

Need easier way to apply

Vectra is the only flea treatment that has worked for our dog. Just make sure you get those 2 discs all the way together or the meds leak out the sides all over

Vectra is the only flea treatment that has worked for our dog. Just make sure you get those 2 discs all the way together or the meds leak out the sides all over your hand and dogs fur. Took me awhile to get this exactly right..also very hard to get this in a continuous line from rear to shoulder blades with long thick fur- so I just put in spots down his back after parting his fur.

Rated 2 out of 5 stars
By Marcia on Nov 28, 2025

That it wasn’t as effective as expected

When applying on their top line the applicator stem broke off with a minimal amount of pressure. I applied less with the second application and that one broke

When applying on their top line the applicator stem broke off with a minimal amount of pressure. I applied less with the second application and that one broke also making a messy application. And I did find attached, bloated ticks on my Labradors after the treatment before a month was up.

Rated 4 out of 5 stars
By Timothy on Nov 1, 2025

very good product but may leak between plastic applicator and tube

i have used this product for years on different dogs and i think it works good, but twice now i have had liquid leak between the plastic applicator tip and the tube

i have used this product for years on different dogs and i think it works good, but twice now i have had liquid leak between the plastic applicator tip and the tube of product when i am applying it to my dog and it got on my skin and my dog's fur instead of their skin. the manufacturer should redesign the product to be more robust like some other pet products that have a removable tip that pokes a hole into a heavy vinyl-type tube that can't leak.

Rated 5 out of 5 stars
By Peter on Dec 25, 2025

Rx flea & tick

It always delivers on time if not early. Set up for every 6 months. Our German Shepherd uses it year round and she has few issues with ticks and none with flea

It always delivers on time if not early. Set up for every 6 months. Our German Shepherd uses it year round and she has few issues with ticks and none with fleas

Rated 5 out of 5 stars
By Michael on Dec 16, 2025

Great Price and Shipping

I was able to use a promo code and gift code that made the price great for this product. They shipped it right away and I got it earlier than expected.

I was able to use a promo code and gift code that made the price great for this product. They shipped it right away and I got it earlier than expected.

Rated 5 out of 5 stars
By Elizabeth on Oct 7, 2025

Best Ectoparasiticide for pets in the world!

This product not only prevents biting by ectoparasites (fleas, ticks, mosquitoes), it also KILLS the bug, meaning those bugs cannot bite another animal or person

This product not only prevents biting by ectoparasites (fleas, ticks, mosquitoes), it also KILLS the bug, meaning those bugs cannot bite another animal or person. Because it is applied to the outside of the pet, it doesn’t poison the pet from the inside as the oral paraciticides do. All my family and friends use Vectra 3D.

Rated 1 out of 5 stars
By Sarah on Oct 11, 2025

Leaky

As another poster commented, the Vectra 3D from Chewy leaks. I’ve never encountered this problem with the same product from my vet, and I’m horrified to find it

As another poster commented, the Vectra 3D from Chewy leaks. I’ve never encountered this problem with the same product from my vet, and I’m horrified to find it has happened with the box I purchased from Chewy. Hopefully I don’t experience a nasty reaction from having pesticide all over my fingers.

Rated 1 out of 5 stars
By Linda on Nov 16, 2025

works for 2 weeks max

this and all the topicals we've have tried as of late simply do not work for more than 2 weeks ...finally had to get an rx for nexgard from the vet .

this and all the topicals we've have tried as of late simply do not work for more than 2 weeks ...finally had to get an rx for nexgard from the vet .

Rated 5 out of 5 stars
By matt on Oct 16, 2025

Chewy by far is the best!!!!!!!!!!!!!!!!

I can’t say enough on how great the company is! Products, service, reliability, and upmost animal compassion!!

I can’t say enough on how great the company is! Products, service, reliability, and upmost animal compassion!!