Onguard Plus Flea & Tick Spot Treatment for Dogs, 23-44 lbs, 3 Doses (3-mos. supply)

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$16.91 Chewy Price
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About This Item

Details

  • 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 23 to 44 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.

Ingredients

Instructions

FAQ

Learn More About Onguard Plus From Our Team of Experts

Questions & Answers

9 Customer Questions


Is this safe for older dogs?

Answer by ChewyApr 21, 2021
This flea treatment is appropriate for dogs 8 weeks and older within the weight specified on the packaging (for this treatment, 23-44 lbs)

Does this help repel mosquitoes?

Answer by ChewyMar 23, 2021
This treatment does not repel mosquitos.

Is this Vet Recommended?

Answer by ChewyMar 14, 2021
This Flea and Tick Treatment does not require an approval from a veterinarian.

Will this product keep flies from biting their ears

Answer by ChewyAug 02, 2021
This treatment is designed to be 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.

4.2
Rated 4.2 out of 5 stars
621 Ratings

Customers Mention

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

Ease of Use

87% Positive

Effectiveness

86% Positive

Ingredients

87% Positive

Long-Term Benefits

87% Positive

282 Customer Reviews



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

Rated 5 out of 5 stars
By Jordon on Jan 11, 2026

Does what it says on the tin

This product does what it advertises, at a lower cost than similar products.

This product does what it advertises, at a lower cost than similar products.


Rated 5 out of 5 stars
By MichelleFlores on Oct 20, 2025

Less itchy can’t see the bugs touring my dogs body

He and she sleeps all nite without shaking my bed thru the night because of the scratching. I love my dogs

He and she sleeps all nite without shaking my bed thru the night because of the scratching. I love my dogs


Rated 5 out of 5 stars
By Kimberly on Sep 4, 2025

Price

It really works no need to spend an outrageous amount of money for flea and tick medication this stuff really works!

It really works no need to spend an outrageous amount of money for flea and tick medication this stuff really works!


Rated 1 out of 5 stars
By Kimberly on Sep 5, 2025

Ineffective

I have used this brand for a while for both our dogs and cats, but the past few times it has not worked at all.

I have used this brand for a while for both our dogs and cats, but the past few times it has not worked at all.


Rated 5 out of 5 stars
By Jessica on Sep 22, 2025

Lower their Anxiety

Works great for any holidays with fireworks. Also pairs well with gabapentin!

Works great for any holidays with fireworks. Also pairs well with gabapentin!


Rated 5 out of 5 stars
By Anita on May 14, 2025

Effectiveness

I live in a rural area in the Missouri Ozarks. My 40 acres has 30 acres of dense forest. Ticks and flea infested mice are abundant. I've used OnGuard for my dogs

I live in a rural area in the Missouri Ozarks. My 40 acres has 30 acres of dense forest. Ticks and flea infested mice are abundant. I've used OnGuard for my dogs and cats (cat version) for many years. I don't want to use oral medications. This topical treatment is very effective. If a tick bites, it dies.


Rated 1 out of 5 stars
By Carmen on Dec 16, 2025

I was thinking I can use something else until I can go to the vet

Big mistake using this product

Big mistake using this product


Rated 5 out of 5 stars
By Stephanie on Sep 10, 2025

It works

This has kept the buggies away! Great product for dogs.

This has kept the buggies away! Great product for dogs.


Rated 5 out of 5 stars
By Davida on Aug 10, 2025

Not too expensive.

Absolutely no ticks or fleas ever in the time I have had him on Onguard.

Absolutely no ticks or fleas ever in the time I have had him on Onguard.


Rated 5 out of 5 stars
By Beverly on Nov 11, 2025

It works

Good price. Easy to apply

Good price. Easy to apply