Onguard Plus Flea & Tick Spot Treatment for Dogs, 23-44 lbs
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Onguard Plus Flea & Tick Treatment for Dogs offers an effective and convenient way to keep your pup protected from pests. This fast-acting topical treatment kills all life stages of fleas and ticks on dogs at least 8 weeks old and ranging from 23 to 44 pounds, and helps control infestations of chewing lice and sarcoptic mange mites. Onguard Plus breaks the flea life cycle and rids your pet of fleas that can cause flea allergy dermatitis. Not only does it wipe out adult fleas, but it keeps new eggs from hatching. This powerful formula keeps killing Brown dog ticks, American dog ticks, Lone Star ticks and Deer ticks that may carry Lyme disease for up to a month. Application is easy—just squeeze this spot treatment onto your pup’s skin between the shoulder blades with the easy-to-use, redesigned applicator. Onguard Plus is long-lasting and waterproof, so it still offers protection even after a bath or if your pup gets caught in the rain. Onguard Plus is manufactured in the USA to bring you the top-quality product and top-notch flea and tick control that you expect for your pets.
Key Benefits- Topical treatment kills all life stages of fleas and ticks on dogs at least 8 weeks old and ranging from 23 to 44 pounds. Controls infestations of chewing lice and sarcoptic mange mites.
- Contains fipronil and (S)-methoprene, formulated to control fleas and ticks. Effective for 30 days and safe for pups 8 weeks and older.
- Breaks 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.
- 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.
(6) applicators each containing 0.045 fl oz (1.34ml)
Precautions
Do not use on cats. Keep out of reach of children. Use only on dogs and puppies weighing up to 22 lbs. and 8 weeks or older. It is a violation of Federal Law to use this product in a manner inconsistent with its labeling. Do not allow children to apply product. To prevent harm to you and your dog, read the entire label and package insert before each use. Follow all directions and precautionary statements carefully. Use on dogs only. Do not use on cats, rabbits or other animals.
Onguard Plus is not manufactured by or distributed by Merial Limited. Frontline is a registered trademark of Merial Limited.
Important Information
Fleas rise to the top of your dog's coat as they die, so consider it a triumph if you start seeing more fleas at first, after treating your pet.
Onguard Plus works to eliminate fleas in all life stages. If you’re still seeing fleas after application, it may be because your dog has picked up new fleas from the environment, which may include other pets, surfaces and outdoor areas. Don’t worry, Onguard Plus starts working immediately on any new fleas that get on your dog, eliminating them within 24 hours from contact. 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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Item Number222829
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Dimensions5.75 x 1.25 x 4.38 inches
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Weight1.76 ounces
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Administration FormTopical
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UsageTreatment
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LifestageAdult
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BrandChewy Exclusives
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Breed SizeMedium Breeds, Small Breeds
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Product FormSolution
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Health ConditionFleas, Ticks
Active Ingredients: Fipronil 9.8%, (S)-Methoprene 8.8%.
To apply Onguard Plus Flea & Tick for Dogs: Your dog needs to be dry at the time of application and remain dry for 24 hours after application. Place applicator tip through dog's hair to the skin level between the shoulder blades. Squeeze applicator, applying entire contents in a single spot to the dog's skin. Avoid superficial application to the dog's hair. Allow area to dry before touching treated area. Do not apply more than one applicator per dog per treatment regardless of the dog's weight.
Fleas: Kills fleas, flea eggs and flea larvae. Prevents all flea stages (eggs, larvae, pupae) from developing. Kills newly emerged fleas before they lay eggs. Kills fleas which may cause flea allergy dermatitis.
Lice: Rapidly controls infestations of chewing lice.
Mites: Aids in control of sarcoptic mange mite infestations.
Ticks: Kills all stages of ticks (larva, nymph, and adult): Brown dog ticks (Rhipicephalus sanguineus), American dog ticks (Dermacentor variabilis), Lone Star ticks (Amblyomma americanum), Deer ticks (Ixodes scapularis) which may carry Lyme disease.
Frequency of Application Fleas: When used monthly, Onguard Plus Flea & Tick for Dogs breaks the flea life cycle and controls fleas, flea eggs, and flea larva on your dog for up to three months. Although Onguard Plus Flea & Tick for Dogs can control fleas for up to three months, if there is a high risk of re-infestation of fleas on your dog or if the dog has fleas which may cause flea allergy dermatitis, apply this product once a month.
Ticks: Onguard Plus Flea & Tick for Dogs kills larva, nymph and adult ticks that may transmit Lyme disease, Rocky Mountain Spotted Fever, ehrlichiosis, babesiosis, and anaplasmosis for at least one month. For best control of ticks, apply once every month.
Chewing Lice: Onguard Plus Flea & Tick for Dogs kills chewing lice for at least one month. For best control of chewing lice, apply once every month.
Sarcoptic Mites: Applied once a month, Onguard Plus Flea & Tick for Dogs aids in the control of sarcoptic mange mite infestations.
Do not reapply Onguard Plus Flea & Tick for Dogs for 30 days.
One Solution, Powerful Protection
Onguard Plus is a monthly topical spot treatment that helps eliminate fleas and ticks and protects your pet from painful bites and infestations. This flea and tick preventative treatment not only stops ticks and fleas in their tracks, but also prevents the hatching of new fleas and keeps fighting off ticks so your dog can find relief from these pests.

Preventing Fleas at Every Turn
Fleas are not only a nuisance for your pup, but they may also cause bigger problems like flea allergy dermatitis. The best way to prevent and eliminate a flea problem is to attack them at all life stages, which Onguard Plus does efficiently.
Flea finds a home
Once on your cat, it bites to feed within just 2 hours.
Eggs are laid
In 2 days, an adult flea will lay eggs.
Eggs hatch into larvae
Eggs fall off your pet, scatter around the home, and then hatch.
Larvae turn into pupae
Pupae can wait for up to a year before emerging as adult fleas.
2 Powerful Active Ingredients
Onguard Plus uses two active ingredients that are commonly used to protect dogs from fleas and ticks. Fipronil and (S)-methoprene work together to stop an infestation in its tracks and prevent future ones. Fipronil kills adult fleas, ticks and chewing lice and aids eliminating flea eggs and larvae by disrupting their maturation. Together the two create a highly effective flea and tick preventative treatment.
One-Step Application
These topical flea and tick treatments are easy to apply and effective for up to 30 days. Choose from three treatments or six so you can keep your pet protected. Simply apply it between the shoulder blades of your pet, and the long-lasting solution will keep protecting them from fleas and ticks. The formula is both waterproof and sunlight-proof, so you don’t have to worry about reapplication throughout the month.

Combats Ticks for a Healthy Pet
Onguard Plus is an effective preventative that kills ticks at all life stages and keeps them from coming back. Monthly applications of Onguard Plus can protect your pet from ticks that may carry Lyme disease and Rocky Mountain spotted fever. It kills many of the most common types of ticks that carry these diseases.
About Onguard Plus Flea & Tick
Onguard Plus is dedicated to protecting cats and dogs from the discomfort of disease that come along with flea and tick infestations. That is why they offer efficient and effective flea and tick treatments that will keep your pet happy and healthy. Their monthly solutions for flea and tick prevention are convenient and ideal for busy pet parents who want to spend more time with their pets, not fighting off fleas and ticks.

Customer Reviews
91% Recommend
91% of reviewersrecommend this product
You've Already Reviewed This Item
11 Reviews
Showing 1-10 of 11 Reviews
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Works great, cheaper than competing brands
By Julia on Feb 23, 2021
Works great! I have a doggo who is a little older and I've always used a big name flea and tick company for the monthly use but won't mention the name of it per the writing guidelines, but it is one of the major companies. This has been just as effective in keeping my fur baby flea and tick free! I live in a city so ticks aren't a huge concern but for fleas I know if she plays with other dogs she won't be getting any. The active ingredients are the exact same and the same % as the bigger name brand I previously used so Onguard is saving me some bucks I can use towards treats for my doggo! Definitely recommend as it works, is affordable, and no downside. I pet sit from time to time Works great! I have a doggo who is a little older and I've always used a big name flea and tick company for the monthly use but won't mention the name of it per the writing guidelines, but it is one of the major companies. This has been just as effective in keeping my fur baby flea and tick free! I live in a city so ticks aren't a huge concern but for fleas I know if she plays with other dogs she won't be getting any. The active ingredients are the exact same and the same % as the bigger name brand I previously used so Onguard is saving me some bucks I can use towards treats for my doggo! Definitely recommend as it works, is affordable, and no downside. I pet sit from time to time so it is also great to have some on hand in case their owner forgot to flea and tick and they give me an OK to dose their pup! Here's a pic of my happy flea (and tick) free girl! … more
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Great product
By Stephania on Feb 25, 2021
I’ve been having an issue with bugs in my yard so I bought this to gain some peace of mind since my pup loves being in the great outdoors. This is an awesome alternative to other pricier options out there on the market and Chewy never fails me with their delivery. Got this so fast it made my head spin.
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Works Great!
By Sabu on Feb 22, 2021
I was having issues last year when I went to the forests with my dog, he would be infested with fleas. I heard about this product from a friend, and I noticed a huge improvement! No more tick and fleas on his coat after going for a walk in the woods. Will be definitely be buying next year!
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Application worked well but a bit sticky
By DrSophiaT on Feb 24, 2021
The application worked well but I find this product rather sticky on my poodles curly hair. He does not have fleas but hope to prevent him from getting any with this product. I will update my review once I have it used longer term.
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Works amazing on my frenchies
By TaylorF on Feb 22, 2021
I have French bulldogs and this works well on them. My male and female were both scratching a lot so I gave them this and it really helped. Not messy and easy to apply! I will definitely be buying more. Great product.
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Easy application
By Sonia on Feb 24, 2021
Got this as preventative treatment for our newly adopted husky. I love how easy it was to apply. She didn’t notice that I was applying anything, and I didn’t notice a smell.
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Woof, sticky!
By Becky on Nov 18, 2020
Tried this as a new flea and tick for my pups, and woof! Compared to the others I've used it sure leaves more of a sticky mess in my pets coat! Being applied all the way down to their skin, it seemed to work its way back up to the top of their coat and I'm sure was rubbed off at least a little as well. I'm sure it would be effective so I didn't give it one star, but I really wish it wasn't such a hassle when applying to my dogs.
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Not Effective
By Melissa on Nov 24, 2020
This did not work for me. My beagle had fleas. Not a bad infestation by any means. This did nothing. I bought a Seresto collar after 2 full days after applying this treatment. The collar killed all the fleas within 24 hrs. This treatment may work for preventive purposes, but did not help to treat/kill existing fleas
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Works for us!
By Lydia on Jan 3, 2021
We live next to the woods, love this so much better for fleas and ticks! I have a lab/husky mix, cocker spaniel and mini poodle...works for all of them. Going on yr 2....
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Onguard Flea
By Herdsmom on Feb 23, 2021
Seems to be working but not as well as Frontline. But more affordable