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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🐾 Stay bite-free, stress-free—because your dog deserves the best defense!

FAST ACTING FORMULA - Begins reducing flea feeding within 5 minutes, giving your furry friend rapid relief and preventing allergic reactions.
ALL WEATHER PROTECTION - Water-resistant and quick-drying, perfect for active dogs who love the outdoors—rain or shine, protection stays strong.
EFFORTLESS APPLICATION - Easy-to-use applicator designed for medium dogs (21-55 lbs) with a 6-month supply—hassle-free parasite control for busy pet parents.
INSTANT INSECT DEFENSE - Kills fleas, ticks, and mosquitoes on contact—no bite required, so your dog stays protected before pests even land.
BROAD SPECTRUM COVERAGE - Repels and kills multiple parasites including fleas, ticks (brown, American, deer, Gulf Coast, lone star), mosquitoes, lice, and mites.

Vectra 3D for Dogs is a powerful, fast-acting flea, tick, and mosquito treatment designed for medium dogs (21-55 lbs). Its water-resistant, non-greasy formula kills parasites on contact without requiring a bite, starts working within 5 minutes, and provides a full month of protection per dose. With broad-spectrum efficacy against multiple pests and an easy applicator, it offers hassle-free, all-weather defense to keep your dog healthy and comfortable.

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₨4503

Duties & taxes incl.

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Product Dimensions	13.34 x 2.54 x 21.59 cm; 1.42 g
Item model number	D73820E
Pet Life Stage	All Life Stages
Item Form	Spray
Allergen Information	Abalone Free
Color	Ca14969
Size	Medium
Volume	0.15 Fluid Ounces
Quantity	1
Specific Uses	Parasites
batteries required	No
Batteries Included	No
Item Weight	1.42 g

Vectra 3D for Dogs Flea, Tick & Mosquito Treatment & Prevention for Medium Dogs (21 – 55 lbs), 6 month supply

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