Onguard Flea & Tick Spot Treatment for Dogs, 5-22 lbs, 3 Doses (3-mos. supply) -

Onguard Plus Flea & Tick Spot Treatment for Dogs, 5-22 lbs

By Onguard Plus
Rated 3.3571 out of 5 stars
Pet Weight

Spend $100, Get $30 eGift Card With Code: WINTER

Must enter code at checkout to redeem
$22.66Chewy Price
$21.53Autoship Price
Autoship (Save an extra 5%)

Why Autoship?

  • Save 5% on all future Autoship orders
  • Set your schedule based on your pet's needs
  • No fees, no commitments - skip, change or cancel anytime.

In Stock
FREE 1-3 day shipping over $49

Frequently Bought Together

This Item - Onguard Flea & Tick Spot Treatment for Dogs, 5-22 lbs, 3 Doses (3-mos. supply)
Rated 3.3571 out of 5 stars
$22.66Chewy Price

Spend $100, Get $30 eGift Card

Capstar Flea Oral Treatment for Dogs, 2-25 lbs, 6 Tablets
Rated 3.9041 out of 5 stars
$36.99Chewy Price

Spend $100, Get $30 eGift Card

Vet's Best Indoor Flea & Tick Home Spray for Dogs, 32-oz bottle
Rated 3.87 out of 5 stars
$10.77Chewy Price

Spend $100, Get $30 eGift Card

Total Price: $0.00

About This Item


  • Contains the same two active ingredients as the leading national topical flea and tick brand.
  • Topical treatment kills all life stages of fleas and ticks on dogs at least eight weeks old and ranging from 5 to 22 pounds. Helps control infestations of chewing lice and sarcoptic mange mites.
  • Helps break the flea life cycle and rids your dog of flea eggs, larvae, pupae and adults. Also kills tick larvae, nymphs and adults.
  • Effective against fleas that cause flea allergy dermatitis as well as brown dog ticks, American dog ticks, lone star ticks and deer ticks that may carry Lyme disease, when used as directed.
  • Redesigned applicator makes it easier to apply this long-lasting and waterproof treatment that provides protection even after your dog has a bath, or gets wet from the rain or plays in water.
  • Manufactured in the USA for the quality and effectiveness you can trust.

See More



Play Video: Learn More About Onguard Plus From Our Team of Experts
Learn More About Onguard Plus From Our Team of Experts

Compare Similar Items

Customer Rating
Rated 3.3571 out of 5 stars
Rated 2.5833 out of 5 stars
Rated 3.3636 out of 5 stars
Rated 3.3158 out of 5 stars
Rated 3.3944 out of 5 stars
$22.66Chewy Price
$13.99Chewy Price
$14.99Chewy Price
$29.70Chewy Price
$22.76Chewy Price
$21.53Chewy Price
$13.29Chewy Price
$14.24Chewy Price
$28.21Chewy Price
$21.62Chewy Price
Top IngredientsActive Ingredients: Fipronil 9.8%, (S)-Methoprene 8.8%Active Ingredients: Etofenprox: 55.0%, Piperonyl Butoxide*: 10.0%, N-octyl Bicycloheptene Dicarboximide (MGK 264): 1.0%...Permethrin: 45%, S-Methoprene: 3%, Other Ingredients: 52%.Dinitefuran, Pyriproxyfen, Permethrin.Active Ingredients: Fipronil 9.8%, (S)-Methoprene 8.8%.
LifestageAdultAdult, Puppy, SeniorAdult, PuppyPuppy, Adult, SeniorAdult
Breed SizeExtra Small Breeds, Small BreedsSmall BreedsExtra Small Breeds, Small BreedsExtra Small BreedsMedium Breeds, Small Breeds

Questions & Answers

17 Customer Questions

Who is the manufacturer for this brand? It is my first time hearing of Onguard. Is it a Chewy house brand?
Answer by ChewyNov 17, 2020
Onguard Plus is exclusively made for and distributed by Chewy! We work closely with production partners to create and develop our own recipes and oversee production to ensure it adheres to our quality standards. Onguard Plus is manufactured in the United States.

Can I use this on my 3 1/2 lb Yorkie? Or is there something else you would recommend?
Answer by ChewyAug 22, 2021
The minimum safe weight is 5 pounds. Since this is a medication and it is dosed by the weight of the pet, it is very important to be at that specific weight.

Can I give my dog a bath after using this?
Answer by ChewyNov 03, 2020
Your dog needs to be dry at the time of application and remain dry for 24 hours after application.

is this a prescription ?
Answer by ChewyJun 16, 2021
This does not require a prescription.

ReviewsWrite a Review

Rated 3.3571 out of 5 stars
168 Reviews
Would recommend to a friend

168 Customer Reviews

Filter by reviews that mention

Rated 1 out of 5 stars
By Melanie on Jan 28, 2023

No luck with this product

We have been using Seresto collars for a few years now and have not had any issues with fleas or ticks. After reading about so many issues with the Seresto collars we decided to toss them and decided to try Onguard. We purchased it near the end of October. We applied Onguard in November and December. We still ended up with fleas and they spread to our indoor only cats. Last night I woke up to a fat tick crawling on my arm. Upon further inspection of my dog, he had a tick under his ear flap. I am currently researching different topicals that will work with fleas and ticks. We can't use K9 Advantix because the cats will groom the dog and it's toxic to cats so I am not sure what we are going to try.

Rated 1 out of 5 stars
By disappointed on Nov 9, 2022

did not work

I used this on my pets for quite a few months and still fought with fleas. I just switched back to Frontline plus and within 24 hours my pets are soooo much less itchy. I feel guilty that they suffered with fleas for so long when I could have just spent the extra money for something that worked. Was hoping this would work considering that it’s more affordable. But you get what you pay for I suppose

Rated 1 out of 5 stars
By Lindasdoggies10 on Oct 14, 2022

Unfortunately this product did not work 😕

I was highly recommended Onguard plus for my 2 dogs and cat. I'm low income and times are hard 😪 I purchased 1pk 5-22lbs & 1pk 45-88lbs for dogs. Plus, 1pk for my cat. Over $75.00 dollars worth of tick and flea prevention. A lot of money for something that doesn't work. It's only been 3 weeks and I had to give my dogs 3 baths, each time I saw live fleas jumping around in the bathtub. The sad thing is that you have to wait 30 days before reapplying. That's a long time for a pet that's miserable & itching 24/7. It would be a fair statement to say this product does not work : (

Rated 1 out of 5 stars
By Oday on Sep 6, 2022

Doesn't work.

Bought two different kinds the 5 to 22 as well as the up to 60 lb because I have two very different dogs. Not even a week after application no fleas are dead and they are still crawling over him. I thought maybe they had finally figured out a way for flea meds not to be so expensive but that is not the case. Do not waste your money. I know the weights were correct and I know I applied it correctly so fall to the product.

Rated 5 out of 5 stars
By Jmrjmp on Aug 12, 2022

Onguard plus flea and tick treatment

I have used this on both dogs for over a year and so far have had no problems with it. I purchased the six pack. I was hesitant because it is so affordable compared to the brand I was using but have no complaints . I am Very thankful it is so affordable since I am in a fixed income. I would recommend anyone to give it a try.

Rated 2 out of 5 stars
By NoneYaBusinass on Aug 3, 2022

Not a fan didn’t see any results

I used this product on my 12lb Min pin and we did not see any results. We have never had a flea issue, maybe a flea here or there, but this season has been intense. We’ve treated the yard and all pets but this did not seem to do anything. Just my opinion. I followed the instructions just putting that out there.

Rated 5 out of 5 stars
By Tiffany on Aug 13, 2022

Works well

My dog (shihtzu) got fleas from my sisters house. He was scratching. Red. Uncomfortable. I treated him with this product and within 24 hours he was good again. The redness on his skin went away and his scratching kept decreasing as the days went on.

Rated 5 out of 5 stars
By Moxie on Sep 10, 2022

Easy Application

Loved this fleas and tick spot treatment. Usually there is way too much product which just runs all over my dogs coat. Thank goodness they figured out a little goes a long way.

Rated 1 out of 5 stars
By skms on Aug 19, 2022

Doesn't work

My dogs were treated for 2 months with Onguard and the fleas had diminished. When I took them to the groomer they showed me pictures of bloody bath water. Flea infestation is so hard to overcome don't waist your time or money.

Rated 5 out of 5 stars
By Alberta on Aug 21, 2022

Good Stuff

I usually use frontline for my 2 small dogs but I feel the doses have not been as potent in recent years. Tried this from Chewy and way cheaper and just as good, if not better. I recommend. Coming back to buy some more!