VECTRA 3D Flea and Tick Drops for Dogs 11–20 lb, 3-Month Supply

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Product guide

VECTRA 3D Flea and Tick Drops for Dogs 11–20 lb, 3-Month Supply

Supply: VECTRA 3D flea and tick drops for dogs are a three-dose topical treatment listed for dogs weighing 11–20 lb. The listing claims monthly flea and tick prevention plus mosquito repellency, with a single-dose applicator and protection stated to become waterproof after 24 hours.

At a glance

Topical monthly application is described as a single dose applied directly to the skin.
The listing claims flea feeding reduction can begin in as little as 5 minutes, with fleas killed within 4 hours.
The product is claimed to repel mosquitoes as well as provide flea and tick prevention.
The listing says the formula becomes waterproof after 24 hours.

Price

$39.99Save 20%

Reference price: ~~$49.99~~

Price checked: Nov 13, 2026

View offer

Often bought together

Vectra 3D Flea and Tick Prevention for Large Dogs 56–95 lbs, 3‑Month | Topical Flea Drops | Kills and Repels Fleas, Ticks & Mosquitoes | Fast‑Acting, Waterproof, No Prescription Needed

$42.39

Vectra 3D Flea and Tick Prevention for Medium Dogs 21-55 lbs, 3‑Month | Topical Flea Drops | Kills and Repels Fleas, Ticks & Mosquitoes | Fast‑Acting, Waterproof, No Prescription Needed

$42.39

Pros and cons

Pros

Three tubes support a monthly routine across the listed three-month pack period.
The listing describes quick-drying, non-greasy application and mosquito repellency in addition to flea and tick prevention.
No prescription is required, according to the listing.

Technical specifications

13 specifications

Identity
Brand	VECTRA 3D
Model	D73814B
Target dog size	Small
Listed age range	8 Weeks or Older

Formula and format
Form	Drops
Active ingredients	Dinotefuran, Permethrin, Pyriproxyfen
Scent	Unscented
Volume	0.16 fluid ounces
Weight listed	0.86 g
Allergen information	Abalone Free

Dimensions and installation
Dimensions listed	5.25 x 1 x 5.25 inches; 0.03 ounces

Pack details
Included components	3 tubes
Protection interval per application	Each topical application delivers up to one month of protection.

What to know before buying

The listing targets dogs weighing 11–20 lb and gives an age range of 8 weeks or older. Confirm the correct weight range and suitability with a veterinarian before applying, especially if the dog has a history of skin reactions. The claimed waterproof interval is 24 hours after application.

What’s in the box

Included

3 tubes

Who is it for?

A good fit for

Owners seeking a topical monthly flea and tick treatment for dogs weighing 11–20 lb.
Buyers who also want mosquito repellency and prefer a three-dose pack.

Less suited to

Dogs outside the listed 11–20 lb weight range.
Owners seeking a treatment with consistently positive reported effectiveness or side-effect experiences, as customer feedback is mixed.

VECTRA 3D Flea and Tick Drops for Dogs 11–20 lb, 3-Month Supply · photo 2 — Additional product photo 2

Customer reviews on Amazon

4.3 / 5 · 992 ratings

5 stars71%71%
4 stars11%11%
3 stars8%8%
2 stars3%3%
1 star7%7%

Customer feedback is mixed on effectiveness, value, side effects, and duration. Some customers report that it works and lasts as expected, while others say it does not work for their dogs or report irritation. These varied experiences matter for a monthly topical treatment, so weigh the possibility of inconsistent results and skin reactions against the listing's claimed dosing interval. Overall ratings lean positive, but they do not resolve those specific concerns.

Mixed feedback

Customers report mixed effectiveness, with some saying it works well and others saying it does not work for their dogs.
Opinions on value and duration vary.
Feedback on side effects ranges from no reported issues to significant irritation.

Frequently asked questions

How many applications are included?

The listing specifies three tubes and describes each topical application as providing up to one month of protection.

What weight range is this product listed for?

The product title specifies dogs weighing 11–20 lb. Use the weight range on the selected package and consult a veterinarian if unsure.

How soon is it claimed to work against fleas?

The listing says flea feeding may be reduced in as little as 5 minutes and fleas are killed within 4 hours. These are manufacturer claims, not independently verified results.

When does the listing say it is waterproof?

It claims the treatment is waterproof after 24 hours. Follow the package directions for application and water exposure.