10 Best Flea Drops for Dogs in 2024 – Reviews & Top Picks

Discovering fleas on your furry companion is like finding a ticking time bomb strapped under your bed. The problem must be dealt with quickly. You don’t have the luxury of testing products to see which one works.

If the first product you choose fails, you may be in big trouble. A house full of multiplying pests can be more than just a nuisance—it can be a health hazard.

To make sure that you’re covered in case of such an occurrence, we’ve tested all of the popular flea and tick treatments on the market to determine which ones won’t let you down when it counts.

The following reviews will compare the top ten, and the number one position holds the one that we trust the most.

A Quick Look at Our Favorites in 2024:

The 10 Best Flea Drops for Dogs

1. Bayer Advantix II Flea Prevention Dog Drops – Best Overall

For fast-acting and long-lasting relief for your canine partner, the Bayer K9 Advantix II flea prevention is our top recommendation. We had great luck with this one and it seemed to live up to all expectations. Lice, fleas, and ticks will be killed within just 12 hours. Once applied, the Advantix formula continues to work for 30 days, so you don’t have to keep reapplying, and you don’t have to worry about whether your dog is protected. Moreover, biting flies and mosquitoes will be repelled to help keep your dog nice and comfortable.

This package contains six applications to be applied in 30-day intervals, so it will last 6 months. It’s a bit pricey as it’s one of the more expensive options. That said, it’s one of the more effective options. We feel that your money is well spent on this product, which is why it has earned our highest recommendation on this list and is the best flea drops for dogs available this year.

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2. Hartz Topical Flea & Tick Prevention for Dogs – Best Value

Despite being one of the most affordable methods of flea and tick prevention, the Hartz UltraGuard Dual Action topical is one of the best flea drops for dogs. Even though it’s priced so cheap, you still get three separate applications to last for 3 months of protection. While this isn’t as many as some other brands, it’s hard to complain with such a low price tag.

This formula protects your dog’s whole body. It kills and prevents re-infestation from head to toe, so you can rest assured that your dog is taken care of. That said, many customers didn’t like the extremely strong odor that it left on their dogs. The smell dissipated over a few days, but most still found it to be unpleasant. That said, we think it’s one of the best flea and tick preventions available, and its affordability helped it to land our second-place recommendation.

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3. Frontline Plus Flea Treatment for Dogs – Premium Choice

Thanks to the completely waterproof formula of the Frontline Plus Flea Treatment, it only needs to be applied once a month to keep your dog fully protected. It’s effective at killing fleas, flea eggs, lice, and ticks, so your dog will be covered from the bulk of the nasty pests that you might be concerned about. Each box has enough doses to last six months, so you won’t need to re-supply very often. This is a good thing since the price per package is pretty high.

This formula features two separate killing ingredients to make sure larvae and adults are handled completely. We didn’t like the oily residue that was left behind on our dogs, but this is necessary for the repelling of pests. Overall, we think it’s one of the better options, though it doesn’t provide quite the same bang for your buck that the Bayer K9 Advantix in our top position did.

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4. TevraPet Activate Dog Flea & Tick Prevention

Though it contains the same active ingredients as the K9 Advantix II, many customers didn’t get the same performance from the TevraPet Activate II flea and tick prevention drops. It seems like it may not contain the same amounts of those ingredients because it seems to be just not as effective as the Bayer product. Of course, it’s also much lower-priced, so we didn’t expect it to perform at the same level. It did have a positive effect, just not as pronounced as we’d prefer.

For the low price, you get a 4-month supply. This is one of the better deals, but with the reduced effectiveness, it’s a tradeoff we’d rather not make. Worse, some dogs had an adverse reaction and seemed to dislike these drops once applied. However, many owners used it on their dogs without any adverse reactions and it was semi-effective with them.

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5. Sentry FiproGuard Topical Flea Drops for Dogs

Available in a 3-month supply, the Sentry FiproGuard 2950 topical flea drops are one of the most affordable flea drops for dogs. Buying it once and not having to think about it again for a quarter of a year is very appealing to us, but unfortunately, this product isn’t highly effective. It is waterproof and shouldn’t wash off of your dog. But unlike other medications, this one didn’t leave any visible signs of application except for the terrible smell.

Many owners did notice a reduction in pests, but it didn’t cure the flea problem they had purchased it to solve. Other products were several times more expensive though, so we were hoping for the best with the Sentry FiproGuard.

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6. CrossBlock II Flea Preventative for Dogs

Initially, we were attracted to the very low price of the CrossBlock II Flea preventative. However, we don’t think it’s a good choice when compared to other options on the market for the simple fact that it’s not reliably effective. The performance it provides is spotty, at best. In some cases, owners saw results in reducing the number of active fleas on their dogs, but they returned in short order. In others, they didn’t get any noticeable reduction at all. In many cases, it failed to work on ticks since some owners still found several while using this product. Even though it’s a very small investment, we don’t think the value is there since it simply didn’t work well enough to recommend.

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7. Advecta Dog Flea & Tick Topical Treatment

We liked the sound of the 5-way protection that the Advecta flea and tick topical treatment promised to provide. Offering safety from fleas, ticks, biting flies, mosquitoes, and lice is enticing, but it didn’t manage to perform this feat well enough to climb our list and earn a recommendation.

The worst issue was that it made some customers’ dogs sick, and they had to deal with some unpleasant stomach issues including vomiting and diarrhea. It is priced pretty affordably for a 4-month supply, especially since it contains the same active ingredients as the K9 Advantix II that earned our top recommendation. However, the performance is not on par, and we think you’re better off getting a product that works, instead of spending your money on an inferior imitation.

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8. Vet’s Best Flea & Tick Spot-on Drops

Like many people, we were attracted to the plant-based formula that Vet’s Best offers with its Spot-On flea and tick drops. Even better, it’s very affordably priced for the 4-month supply that’s included. Of course, if it worked as well as advertised, it would have certainly worked its way up to a higher position on our list. In our experience, it just wasn’t effective at reducing the fleas and ticks on our furry friends.

Though it didn’t work for its intended use, it did make a nice yellow fur dye, and it took a while to wash out, so this is a drawback to be aware of if you have a canine with light-colored fur, especially white. Beyond the yellow staining, it’s also got a pretty offensive scent. In the end, we don’t really suggest this product, even though we wanted to like it for the plant-based approach.

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9. Adams Plus Flea & Tick Spot On

The best thing we can say about the Adams Plus flea and tick Spot-On drops is that they’re very affordable for any budget. Of course, they didn’t do what we hoped, so even though they’re very affordably priced for the three doses that you get in a package, we don’t think they’re one of the better values.

They’re supposed to be fast working, but it was several days before many owners noticed any difference. After that, it was just a few more days before the fleas came back with a vengeance, undoing any effect the Adams Plus drops had. Like many other drops, these had a very strong and unpleasant odor that we’d rather stay away from. We’d suggest spending your money on something that’s proven to get rid of the pests that are plaguing your pup.

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10. Solimo Flea & Tick Topical Treatment for Dogs

One of the pricier options we tested, the Solimo flea and tick topical treatment was also one of the least effective ones. It’s got the same active ingredients as Frontline Plus, but it didn’t show itself to be nearly as effective. Also, similar to many other products, this left a strong odor on dogs that we’d rather do without.

If it had been effective, we could look past the price. As it is, we believe the Solimo flea and tick topical treatment is overpriced and ineffective, which is why it rounds out the bottom of our list.

Conclusion

When you discover the beginnings of a pest infestation on your dog, you need to act fast with the right product before the problem explodes out of proportion. To help ensure you make the right decision, we’ve gone through the hard work of testing out all the options to find the most reliable and effective choice. You have read our reviews and you know how they stack up against each other, but before you make a purchase, we are going to quickly summarize our top recommendations.

Our number one choice of best flea drops for dogs that we think is the most effective is the Bayer K9 Advantix II flea prevention drops. A package contains enough to keep your dog protected for 4 months. Each dose kills the existing pests within 12 hours and continues to work for 30 days. In our research, it was the most effective at actually killing the unwanted intruders. Our runner-up and choice of best flea drops for dogs for the money is the Hartz Topical flea and tick prevention. This full-body protector was very affordable and still managed to be an effective remedy to pest problems for a full 30 days from application.

See Also:

• How to Keep Flies Away From Your Dog (6 Proven Methods)
• Best Flea Pills for Dogs – Reviews & Top Picks