Onguard Plus Flea & Tick Spot Treatment for Cats, over 1.5 lbs, 6 Doses (6-mos. supply)

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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 cats at least eight weeks old and 1.5 to 22 pounds. Also helps control infestations of chewing lice.
  • Helps break the flea life cycle and rids your cat 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 cat has a bath or gets their fur wet.

Ingredients

Instructions

FAQ

Learn More About Onguard Plus From Our Team of Experts

Questions & Answers

14 Customer Questions


Does the kitten have to be both 8 weeks and over 1.5lbs?. Or one or the other? I found kittens I took them in they have fleas they’re about 7 weeks now old healthy and @1.5 to 2lbs

Answer by ChewyOct 08, 2020
Kittens must be both 8 weeks old and weigh over 1.5-pounds to use this treatment.

does on guard have expiration date

Answer by ChewyApr 17, 2022
This treatment has no expiration date.

is this product quick drying

Answer by ChewyMar 31, 2021
The topical will be dispersed over your cat’s body through their natural oils and attached to the hair follicles. This process can take up to 24 hours. Do not apply more often than once every 4 weeks.

Can you apply an ear mite solution at the same time that you administer this tick & flea spot treatment? Or should I do them on 2 separate days?

Answer by ChewyApr 14, 2021
Please consult with your veterinarian before giving your pet multiple treatments/preventatives.

3.8
Rated 3.8 out of 5 stars
1868 Ratings

851 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 Cynthia on Dec 27, 2025

Onguard DOES NOT WORK at all.

I used as directed. Fleas kept multiplying, while we waited for relief. I kept vacuuming. That product WASTED precious time, while the cats & I suffer. Why do they

I used as directed. Fleas kept multiplying, while we waited for relief. I kept vacuuming. That product WASTED precious time, while the cats & I suffer. Why do they even make & sell a product that DOES NOT WORK? I have since ordered a different product (Advantage) from you. May we return to you, the unused portion of the Onguard pack? Please?


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

Ack...fleas!

No cat is happy to get flea treatments, but when it's something that doesn't work it's worse! All four of my cats got treated the same day, about 10 days ago, and

No cat is happy to get flea treatments, but when it's something that doesn't work it's worse! All four of my cats got treated the same day, about 10 days ago, and just checked with the flea comb and found multiple on each, except the short hair who didn't seem to have any. The crazy thing is the older, indoors only cat, is the one who had the most! Was not worth the lower price in comparison to what I normally get (Frontline).


Rated 1 out of 5 stars
By Timothy on Nov 2, 2025

Did Not kill Fleas

I tried this, thinking it was an awesome bargain; however all my pets (including dogs that I purchased the appropriate product for), did not control fleas. I usually

I tried this, thinking it was an awesome bargain; however all my pets (including dogs that I purchased the appropriate product for), did not control fleas. I usually buy Pet Armor Plus, and I have never seen fleas on my pets or in my home. With this Chewy product, all my pets have fleas crawling on them and my house has fleas in it! I am using natural remedies for my babies until I can safely apply the product that I normally use. I have been vacuuming and washing daily. It's been quite a hassle for me, and my babies are not too keen on the fleas either. Chewy has given me a refund on this product, but it doesn't help with all the extra work and frustration that I and my babies have been going through. This Onguard product does not help with fleas. It may help somewhat control ticks, because there has only been a few ticks on my pets that go outside. Definitely would not recommend this.


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

Great stuff!

I was very surprised how quickly the flea treatment worked, and I was glad that the label said I would see fleas coming to the top of their coat because within a

I was very surprised how quickly the flea treatment worked, and I was glad that the label said I would see fleas coming to the top of their coat because within a day and a half you saw dead fleas coming up and falling off! None of my animals seem to have any problem with it. They’re all healthy and happy and it’s taking care of the problem. It was delivered quickly and I appreciate chewy for the information that they post so that you know what you’re buying.


Rated 4 out of 5 stars
By Courtney on Nov 7, 2025

Honestly wow!

I’m only giving 4 stars right now because we have only just used the product today but I am here to tell you with the combo of this and capstar I watched the fleas

I’m only giving 4 stars right now because we have only just used the product today but I am here to tell you with the combo of this and capstar I watched the fleas physically fall off my cats. At first I noticed that they couldn’t stop itching but then I realized it was because the fleas were fighting to get off my cats. My cats are older so bathing them isn’t always and option as it stresses them out so this was a game changer.


Rated 2 out of 5 stars
By Stacy on Oct 29, 2025

Disappointing duration of protection

I was excited to find something for flea protection at a lower, more affordable price. We have 9 rescue cats, so affordability is important. Unfortunately, after

I was excited to find something for flea protection at a lower, more affordable price. We have 9 rescue cats, so affordability is important. Unfortunately, after application my cats were only free of fleas for about two weeks. I gave it another chance to break the life cycle of the fleas and it barely worked two weeks. I am disappointed as the active ingredient is the same as leading brands, but it just simply didn’t work long enough.


Rated 2 out of 5 stars
By James on Dec 18, 2025

Did not last

AfThe drops only lasted about 2 weeks and the fleas came back. We live in an area where there are a fair amount of other animals and need a good treatment, this

AfThe drops only lasted about 2 weeks and the fleas came back. We live in an area where there are a fair amount of other animals and need a good treatment, this did not last.


Rated 5 out of 5 stars
By jess on Nov 7, 2025

great for keeping ticks off

Got this mainly because I have an indoor outdoor cat who would come in and bring in ticks from outside, this flea treatment is great for both keeping fleas and ticks

Got this mainly because I have an indoor outdoor cat who would come in and bring in ticks from outside, this flea treatment is great for both keeping fleas and ticks off. Started working within a day and have not seen any ticks in the house ever since I started using this product on my cat.


Rated 3 out of 5 stars
By Lyn on Dec 15, 2025

Didn’t work very well

My cats got a few fleas from the neighbors dog. This treatment did not work as well as I thought it should. I recently bought another brand, that is working much

My cats got a few fleas from the neighbors dog. This treatment did not work as well as I thought it should. I recently bought another brand, that is working much better.


Rated 1 out of 5 stars
By karyn on Nov 18, 2025

Love the price but didn't work

Have 4 cats. It stopped working on 2 of them after 2 weeks, I was pulling ticks off them. I get it down to the skin so there's no excuse...the one started loosing

Have 4 cats. It stopped working on 2 of them after 2 weeks, I was pulling ticks off them. I get it down to the skin so there's no excuse...the one started loosing fur from itching....will not buy again