does this work against biting flies?

We had used for several years and it worked. But last year had to take Georgia to vet for scratching. She had fleas so this did not work. Bad that I had ordered early to have and seller would not take the new package back. We ended with $150 bill and our vet put Georgia on Bravecto pills. Just make sure if order 6 doses before you need since company will not take them back even though I had receipt of vet bill.

My girl back andd forth between 53-58#, which one should I get?

If it was my dog I would get the 56# and up size if my dog’s weight tended more often toward 58#. The difference is in the amount of product to put on the dog. The bigger the dog, the more product needed. I would also consider whether my dog is flea allergic, and if the area has a lot of fleas or ticks.

What is expiration date?

This product is a US EPA registered product, it does not have an expiration date

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Vectra 3D Flea and Tick Prevention for Dogs, Kills and Repels Fleas, Ticks & Mosquitoes | Fast‑Acting, Waterproof, No Prescription Needed | Medium Dogs 21-55 lbs, 6‑Month Supply

Vectra 3D Flea and Tick Prevention for Dogs, Kills and Repels Fleas, Ticks & Mosquitoes | Fast‑Acting, Waterproof, No Prescription Needed | Medium Dogs 21-55 lbs, 6‑Month Supply

Product ID: 117619757

Details

Active Ingredients
Dinotefuran
Age Range (Description)
8 Weeks or
Allergen Information
Abalone Free
Brand
VECTRA 3D
Dog Breed Size
Medium
Item Form
Topical Drops

💧Waterproof after 24 hours

⏱️Kills fleas in 4 hours

🛡️6-month continuous protection

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VT35319

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Description

🐾 Protect your pup like a pro—because every dog deserves a bug-free life!

TRUSTED LONGEVITY - Backed by 15 years of proven protection, keeping your medium dog safe and itch-free month after month.
RAPID FLEA DEFENSE - Starts reducing flea bites in just 5 minutes—because your dog deserves instant relief.
ALL IN ONE PEST SHIELD - Repels and kills fleas, ticks, mosquitoes, lice, mites, and biting flies—no bite required.
EFFORTLESS APPLICATION - Quick-drying, fragrance-free, non-greasy topical drops that fit seamlessly into your busy lifestyle.
NO PRESCRIPTION NEEDED - Easy access to premium flea and tick control without the hassle of vet visits.

Vectra 3D for Medium Dogs (21-55 lbs) is a 6-month supply topical treatment that rapidly kills and repels fleas, ticks, mosquitoes, and other pests. Trusted for over 15 years, it starts working within 5 minutes, kills fleas in 4 hours, and becomes waterproof after 24 hours. This fragrance-free, non-greasy formula requires no prescription and offers hassle-free monthly protection to keep your dog comfortable and pest-free.

Specifications

ASIN	B072JTQB99
ASIN	B072JTQB99
Active Ingredients	Dinotefuran
Age Range Description	8 Weeks or Older
Allergen Information	Abalone Free
Best Sellers Rank	#10,448 in Pet Supplies ( See Top 100 in Pet Supplies ) #48 in Dog Flea Drops
Brand Name	VECTRA 3D
Customer Reviews	4.5 4.5 out of 5 stars (823)
Date First Available	June 5, 2017
Dog Breed Size	Medium
Global Trade Identification Number	00851321007090
Included Components	6 tubes
Item Form	Topical Drops
Item Type Name	Flea and Tick
Item Weight	0.05 Ounces
Item model number	D73820E
Manufacturer	Ceva Animal Health
Manufacturer	Ceva Animal Health
Manufacturer Part Number	D73820E
Model Number	D73820E
Pet Type	Dog
Product Dimensions	5.25 x 1 x 8.5 inches; 0.05 ounces
Scent Name	Unscented
Target Species	Cat, Dog
UPC	851321007090
Unit Count	6 Count
Volume	0.15 Fluid Ounces

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