It’s almost inevitable that a cat will pick up fleas at some point. The best way to prevent your cat and house getting infested with these irritating little critters is to keep on top of flea treatments. There are quite a few different options for treating your cat, including drops, powders, tablets, and shampoos. The easiest options are flea drops, which can quickly be applied to the back of your cat’s neck.
If you take a quick look at some of the options out there, you’ll soon see that there are hundreds of different products to choose from. So, how on earth do you decide which one is going to be best for your cat? We’re here to help!
Our reviews include a round-up of our favorite top 10 flea drops, as well as pros and cons for each one. They’ll quickly work to eliminate fleas to leave you and your cat feeling relieved!
A Quick Comparison of Our Favorites
|Best Overall||Bayer Advantage II Flea Treatment||
|Best Value||PetArmor Flea & Tick Squeeze-On Treatment||
|Premium Choice||Revolution Topical Solution Flea Treatment||
|Frontline Plus Flea & Tick Treatment||
|Onguard Plus Flea & Tick Treatment||
10 Best Flea Drops for Cats
1. Bayer Advantage II Flea Treatment — Best Overall
As our choice of the best overall flea drops for cats, we recommend the Bayer Advantage II Flea Treatment. This drop-on treatment kills fleas on contact and is effective against flea eggs, larvae, and adults, so with one application, you can take care of everything! The waterproof formula can be used on adult cats and kittens over the age of 8 weeks (as long as they weigh over 9 pounds).
This product begins working within 12 hours of application, and the active ingredients of imidacloprid and pyriproxyfen do not require fleas to bite your cat so you shouldn’t see them being irritated. It’s available in packs for a 1-, 2-, 4-, or 6-month supply. If your cat has a severe infestation, you can use this product twice in one month, but it’s best to consult your vet before doing so. Thousands of cat owners swear by these flea drops, and we’re sure you’ll be just as impressed!
2. PetArmor Flea & Tick Squeeze-On Treatment — Best Value
If you’re looking for the best flea drops for cats for the money, then we highly recommend the PetArmor Flea & Tick Squeeze-On Treatment. This great value pack includes 3 months’ worth of drops yet is less than half the price of 1 months’ worth of the best overall choice on this list. This drop-on topical treatment contains the active ingredient fipronil, which effectively kills adult fleas, brown ticks, American ticks, deer ticks, lone star ticks, and chewing lice.
What this drop-on doesn’t do is kill flea eggs and larvae, so if your cat does have an infestation, you’ll have to buy additional products to deal with those or keep using this treatment until the eggs and larvae have hatched into adult fleas, which will then be targeted by this drop-on.
3. Revolution Topical Solution Flea Treatment — Premium Choice
The Revolution Topical Solution Flea Treatment is our premium choice, and due to its active ingredients, you will need a prescription from your cat’s veterinarian. Besides protecting your cat against fleas, this product protects your cat against new heartworm infections. It can also control ear mite infestations, roundworm, and intestinal hookworms.
This drop-on treatment stops flea eggs from hatching and can be applied just the same as any regular drop-on treatment. It’s safe for kittens over 8 weeks old. The active ingredients are selamectin and sarolaner, as well as butylated hydroxytoluene and isopropyl alcohol. While this drop-on is effective, it can cause side effects, including digestive upsets, hair loss at the application site, and possible skin inflammation. Your cat will need a test to check they’re clear of heartworms before using this product.
4. Frontline Plus Flea & Tick Treatment
Frontline Plus Flea & Tick Treatment not only works at killing adult fleas, but it’s also effective against flea eggs and larvae, as well as ticks and chewing lice. It has two active ingredients, fipronil and (S)-methoprene. Once applied, this is waterproof and lasts for 1 month. It’s safe to use on cats older than 8 weeks, as long as they weigh more than 1.5 pounds. It’s also suitable for pregnant and nursing cats.
Some users do note that this product can take a while to work, but bear in mind that it can take a long time in general to completely break the flea life cycle and get your cat and your home completely free from any fleas. The best way to do this is to choose a drop-on product that affects and kills all life stages of the flea, from eggs to larvae, pupae, and adults. This is what Frontline Plus is designed to do.
5. Onguard Plus Flea & Tick Treatment
The Onguard Plus Flea & Tick Treatment is suitable for cats weighing more than 1.5 pounds. It not only kills all stages of the flea life cycle, but it’s also effective against American ticks, Lone Star ticks, deer ticks, brown dog ticks, and chewing lice. The active ingredients are fipronil and (S)-methoprene, which stay active for 30 days.
The redesigned applicator makes this long-lasting spot-on easier than ever before to apply, and even if your cat needs a bath, this will remain effective. This is safe to use in breeding, pregnant, and lactating cats. Reviewers love how truly non-greasy this treatment is, and it won’t leave any residue on even long-haired cats, as long as you part the hair and apply it directly to the skin.
6. Cheristin Flea Spot Treatment for Cats
The Cheristin Flea Spot Treatment for Cats kills 98-100% of fleas within 12 hours and continues to work for an entire month after application. A single dose can potentially remain effective for up to 6 weeks, making this a cost-effective option. After application, you should see effects after just 30 minutes.
The active ingredient is spinetoram, which isn’t found in other flea drop-on treatments. While this seems effective against adult fleas, it doesn’t kill flea eggs, pupae, or larvae. That means you’ll need to keep re-applying this product until all these have become adult fleas. This also has a strong smell, so while it’s quick-drying and non-greasy, that can be off-putting for some cat owners.
7. PetArmor Plus Flea & Tick Squeeze-On Treatment
The PetArmor Plus Flea & Tick Squeeze-On Treatment kills all life stages of the flea and is effective against both ticks and chewing lice. It uses a combination of two active ingredients: fipronil and (S)-methoprene. The waterproof formula is easy to apply and will remain effective against adult fleas for 30 days. Against flea eggs and larvae, it can remain effective for up to 12 weeks.
The active ingredients used are the number-one choices of many veterinarians, so you can be confident that this will do a great job helping you and your cat say goodbye to those pesky fleas. This drop-on is available in two pack sizes, containing treatments for 3 or 6 months. Reviewers do note that this product can be a little difficult to apply, as the tip of the dropper traps some of the liquid, which may spill when opening.
8. Catego Flea & Tick Spot Treatment
The Catego Flea & Tick Spot Treatment contains six doses, each of which lasts for 1 month. The active ingredients used are dinotefuran, fipronil, and pyriproxyfen. These work together to kill all life stages of the flea, as well as chewing lice and ticks. This dropper has a patented applicator tip, which makes it easy to apply this to your cat.
While most reviewers are happy with this product, it’s worth noting that some say that it didn’t work at all for their cats. Bear in mind that it can take up to 30 days for the effect of flea treatments to become apparent, and there may be other sources of fleas, including carpets and pet bedding.
9. Sentry FiproGuard Flea & Tick Squeeze-On
The Sentry FiproGuard Flea & Tick Squeeze-On contains the same active ingredient, fipronil, as some of the most effective drop-on treatments, including Frontline Top Spot. The advantage is that this is a much cheaper option! Besides killing adult fleas and flea eggs, it is effective against chewing lice and ticks.
Some reviewers say that they noticed little effect when applying this product, but that could be down to regional variations. The price of this flea treatment is so competitive, though, it’s worth trying to see if it seems to be an effective option for your cat.
10. Activyl Flea Treatment
The Activyl Flea Treatment contains the active ingredient Indoxacarb, which is effective against all life stages of the flea, from eggs to larvae and adult fleas. It starts working within 8 hours of application and should have eliminated all adult fleas within the first 24 hours.
Unlike the other flea drop-on treatments, this is only suitable for cats over 9 pounds. If you have a kitten under 9 pounds or small breed cat, then this should not be used. The formula is water-resistant and designed to be non-greasy. As with some other products, the effectiveness seems to depend on your region, so if you have a heavier cat, try it and see if it works!
Before you buy any flea control treatment for your cat, it makes sense to spend time determining what features are most important to you. We focused on drop-on treatments, but flea control products tend to be available in the following formats:
Why should I get rid of fleas?
Besides causing irritation from flea bites for your cat and your family, fleas can transmit diseases that can be unpleasant for all of you!
Fleas can cause painful skin reactions, including flea allergy dermatitis, as well as transfer parasites like tapeworms to your cat. A heavy flea infestation can even lead to your cat developing anemia. Fleas can also carry bacteria that cause cat scratch fever. The cause of the Bubonic Plague, a bacterium known as Yersinia pestis, was carried by fleas!
To avoid all these nasties, using a regular and reliable form of flea control is a great idea. Fortunately, there are plenty of options out there for you to choose from.
The life cycle of fleas
Fleas have a four-stage life cycle: eggs, larvae, pupae, and adult. The only way to control fleas within your home is to break this cycle. Some flea treatments only kill adult fleas, and while these are effective, they can take longer to work. In order to break the life cycle, you’ll need to wait until all eggs, pupae, and larvae have matured into adult fleas before the treatment will kill them. Repeated applications will be needed until all fleas have been killed.
Other treatments affect and kill all life stages of the flea. These can get to work much quicker, so you should see a reduction in fleas sooner.
Don’t forget to treat your house
Besides treating your cat, it’s important to treat your house as well. Flea eggs can survive for up to 10 days, and one single female flea can lay between 20-50 eggs per day. There may be flea eggs in places like your cat’s bed and in the carpets. As the fleas hatch and mature into adult fleas, they will hop onto any passing animals, and before you know it, your cat will have fleas again. Vacuuming your house can remove any flea eggs, but remember to empty the vacuum immediately or the eggs can hatch inside. You’ll also want to wash any fabrics that your cat sits on, like bedding or cushions.
As the best overall flea drops for cats, we selected the Bayer Advantage II Flea Treatment. This easy-to-apply treatment is vet recommended and quickly gets to work killing all life stages of the flea.
In terms of the best value, you can’t beat the PetArmor Flea & Tick Squeeze-On Treatment. Besides killing adult fleas, this treatment also targets ticks and lice.
If you’re looking for a premium choice, we recommend the Revolution Topical Solution Flea Treatment. This prescription product has a five-in-one formula to kill fleas and prevent heartworm, ear mite infestations, roundworm, and intestinal hookworms.
As with many things when it comes to our cats, sometimes it feels like there are too many options to choose from! If you don’t know where to start when it comes to selecting the best flea drops, our reviews are designed to cut right to the heart of the matter and help you make the best decision for your cat.
Featured image credit: Maja Marjanovic, shutterstock
- A Quick Comparison of Our Favorites
- 10 Best Flea Drops for Cats
- 1. Bayer Advantage II Flea Treatment — Best Overall
- 2. PetArmor Flea & Tick Squeeze-On Treatment — Best Value
- 3. Revolution Topical Solution Flea Treatment — Premium Choice
- 4. Frontline Plus Flea & Tick Treatment
- 5. Onguard Plus Flea & Tick Treatment
- 6. Cheristin Flea Spot Treatment for Cats
- 7. PetArmor Plus Flea & Tick Squeeze-On Treatment
- 8. Catego Flea & Tick Spot Treatment
- 9. Sentry FiproGuard Flea & Tick Squeeze-On
- 10. Activyl Flea Treatment
- Buyer’s Guide