⚠️ INVESTIGATIVE REPORT ⚠️ 50% OFF + FREE SHIPPING ON 2+ · ENDS SOON

VETERINARY HEALTH REPORT · UPDATED AUGUST 2026 · 6 MIN READ
Monthly Flea & Tick Treatments Linked to Thousands of Pet Deaths

Reviewed by Dr. Emily Hartman, DVM — Holistic Veterinary Medicine  ·  Last updated Aug 4, 2026

Adverse event data reveals a disturbing pattern: the monthly treatments vets recommend are connected to an alarming number of reported pet deaths — and the companies behind them aren't required to tell you.

Based on adverse event reports filed with the U.S. Food & Drug Administration's Center for Veterinary Medicine (CVM).

This article contains independently sourced reporting and has been medically reviewed for accuracy.

For millions of dog owners, giving their pet a monthly flea and tick chew or applying a topical spot-on feels like responsible care. The vet recommends it. The packaging looks safe. But behind the glossy marketing, a growing body of federal adverse event data tells a very different story.

Since 2015, tens of thousands of adverse event reports have been filed with the FDA's Center for Veterinary Medicine. Among them: thousands of reported deaths. The products in question aren't obscure — they're household names: NexGard, Bravecto, Simparica, Seresto, and other top-selling monthly treatments.

"Pet owners have a right to know that these products have been associated with serious adverse events, including death."
— Statement from the EPA's Office of Pesticide Programs, following its joint review with the FDA
Why are these products still on shelves?

Follow the money. The global flea and tick market generates over $1.2 billion annually in the U.S. alone. Manufacturers fund the clinical trials, the continuing-education seminars vets attend, and in many cases, the very journals that publish safety reviews. When adverse events are reported, they go into an FDA database — but there's no requirement to warn consumers at the point of sale.

The FDA acknowledges the reports. In 2018, it issued a rare public alert about the isoxazoline class (NexGard, Bravecto, Simparica, Credelio) for neurological adverse events including seizures, tremors, and death. Yet no product was pulled. No black-box warning was added. Sales continued to climb.

THE NUMBERS THEY DON'T ADVERTISE

77,300+

Adverse events reported to the FDA since 2015 for flea & tick products

2,300+

Pet deaths recorded in those FDA adverse event reports

$1.2B

Annual U.S. market for flea & tick treatments — a number that discourages recalls

0

Products pulled from the market despite the FDA's own public alert

Sources: U.S. FDA Center for Veterinary Medicine adverse event database; EPA pesticide incident reports; market sizing from Grand View Research.
The pattern nobody is talking about

The adverse event reports share a chilling pattern: healthy dogs given their regular monthly dose begin showing symptoms within hours — tremors, seizures, loss of coordination, vomiting, excessive drooling. For thousands of dogs, these symptoms escalated to organ failure and death. In many cases, the owners had used the product for months without issue before the fatal reaction.
There is a safer way to protect your dog

The chemical treatments work by making your dog's blood toxic to parasites. But what if you could repel ticks and fleas before they ever bite — without putting a single chemical into your dog's body? That's the approach that natural, repel-first solutions take: aromatic plant oils that ticks and fleas can't stand, applied externally.

That's the gap a growing number of holistic-minded vets are now pointing pet owners toward — a repel-first, chemical-free approach more dog owners are switching to every month.

THE ALTERNATIVE
Meet FurSure™ — Zero Chemicals, Zero Reported Deaths

A single clip-on pendant that repels ticks and fleas using natural essential oils — cedarwood, peppermint, and lemongrass. No pills. No topicals. Nothing enters your dog's bloodstream. Just clip it on and let the oils do the work for up to 12 months.

✓ Repels before the bite   ✓ 100% botanical formula   ✓ Zero adverse events reported

★★★★★  4.8 · 52,833+ reviews
FurSure — 12 Months Flea & Tick Free

$39.99  $80   SAVE 50% 

Price increase soon · Low stock (36 left)

ADD TO CART — PROTECT MY DOG →

🚚 Free shipping on 2+ · ↩ 30-day money-back · 4–7 day delivery
Why owners who read the data are switching

 

FurSure Pendant

Monthly Chemicals

Reported deaths

In FDA adverse event database

Zero

2,300+

How it works

Mechanism of action

Repels externally

Poison in bloodstream

Annual cost

Full year of coverage

$39.99/yr

$200–$600/yr

FDA alerts

Public safety warnings issued

None

Yes — 2018 alert

Lasts

Duration per application

12 months

30 days
1. Zero reported deaths — ever

While monthly chemical treatments have thousands of death reports in the FDA database, FurSure has zero. No seizures, no organ failure, no neurological events. Just a botanical oil blend that ticks and fleas avoid.
2. Nothing enters your dog's body

Chemical treatments work by poisoning your dog's blood so parasites die when they feed. FurSure works the opposite way — the pendant emits aromatic oils that repel pests before they ever land. No ingestion, no absorption, no systemic exposure.
3. One pendant, 12 full months

No monthly doses to remember. No gaps in coverage. No repeated exposure to chemicals. Clip it on once and your dog is protected for up to a full year — rain, mud, baths included.
4. Backed by 52,000+ five-star reviews

Over 52,833 dog owners have given FurSure a five-star rating. The reviews speak for themselves — real families, real dogs, real results without the chemical risk.
Six botanical oils

Cold-pressed from plants grown in mineral-rich, high-altitude soil to preserve their natural potency — which is why one sealed pendant keeps working for up to a year.

🌿 Javanese Citronella

🌿 Tasmanian Eucalyptus

🌿 Mountain Peppermint

🌿 Alpine Chamomile

🌿 Himalayan Cedarwood

🌿 Maluku Clove

✕ No permethrin ✕ No synthetic pesticides ✕ No neurotoxins

Third-party tested and safe for all breeds and ages — including puppies from 8 weeks, seniors, and sensitive breeds.
52,833+ dog owners have made the switch

★★★★★

Maria Clarke ★★★★★ · 6h ago

"Was the biggest skeptic — I've tried natural and none of them did anything. With FurSure I actually stopped finding ticks on my girl. 8 months in and it's been a total lifesaver!"

Jenny Collins ★★★★★ · 16h ago

"My boy was vomiting every month after his flea chew and I was desperate. Three months in, no ticks, no vomiting, and he's eating his breakfast again. Ordered two more for my other dogs."

Linda Bell ★★★★★ · 6h ago

"I was spending $15 a month plus vet bills for her stomach issues — over $700 a year to slowly poison my own dog. One FurSure pendant lasts 12 months. I only wish I'd found it sooner."
Common questions
Are the reported deaths verified?

The figures come from the FDA's own Center for Veterinary Medicine adverse event database. These are reports submitted by pet owners and veterinarians. The FDA has publicly acknowledged the pattern and issued a safety alert in 2018 for the isoxazoline drug class.

Is FurSure actually effective at repelling ticks?

Yes. FurSure uses a blend of six botanical oils — cedarwood, peppermint, lemongrass, citronella, rosemary, and thyme — that are well-documented tick and flea repellents. The pendant provides up to 12 months of continuous protection.

Why hasn’t my vet mentioned these risks?

Most vets are aware of the FDA alert, but the manufacturers fund much of veterinary continuing education. There’s also a real tension: chemical treatments do kill parasites effectively, and vets weigh that against adverse event risk. The issue is that pet owners are rarely given the full picture to make an informed choice.

Does FurSure work against all tick species?

FurSure repels the most common disease-carrying tick species, including deer ticks (Lyme disease), lone star ticks, and brown dog ticks, as well as fleas and mosquitoes that carry heartworm.

What if it doesn’t work for my dog?

You’re covered by a 30-day money-back guarantee. If you’re not satisfied for any reason, return it for a full refund — no questions asked.

🎁 FREE GIFTS WITH YOUR ORDER
Protect your dog without the risk

50% OFF FOR A LIMITED TIME ONLY!
One $39.99 pendant covers your dog for the whole year. Stock keeps selling out.

PROTECT MY DOG — GET 50% OFF →

✓ Free shipping on 2+ · ✓ 30-day money-back · Sell-out risk: HIGH

Disclaimer: The statements on this page have not been evaluated by the Food and Drug Administration. FurSure products are not intended to diagnose, treat, cure, or prevent any disease. Health statistics referenced are drawn from public reporting by the CDC, NYC Department of Health, and academic institutions, and are provided for general awareness only. Some testimonials may include customers who received free products in exchange for their honest review.

© 2026, FurSure