Frontline Shield Flea & Tick Treatment for Large Dogs, 41–80 lb, 3 Doses

FRONTLINE Shield is a monthly topical flea and tick treatment for large dogs weighing 41–80 lb (18.6–36.3 kg), with a three-dose pack and 30 days of protection per application.

• For dogs weighing 41–80 lb — the weight range this pack is designed to fit.
• Kills and repels ticks, including all tick life stages, and repels mosquitoes — helps protect against these biting pests.
• Kills adult fleas, flea eggs and larvae, plus chewing lice — targets multiple flea life stages and another common pest.
• One application protects for 30 days and is waterproof 24 hours after application — supports monthly use.
• Topical formula spreads over the body and replenishes from the sebaceous glands — maintains treatment on the dog.
• Three doses per pack — provides a supply for three monthly applications.

Fleas, ticks and mosquitoes can be a concern at home and during outdoor walks or hikes. FRONTLINE Shield is made for monthly topical use as part of a dog’s year-round flea and tick routine, with repellency action against ticks and mosquitoes as well as flea control.

What pests does FRONTLINE Shield target?

FRONTLINE Shield kills adult fleas, flea eggs and larvae, chewing lice, and every stage of ticks, while also repelling ticks and mosquitoes. Its tick repellency includes ticks that may transmit Lyme disease; mosquito repellency addresses mosquitoes that may lead to heartworm disease.

• Targets flea eggs and larvae as well as adult fleas to help prevent reinfestations.
• Ticks and mosquitoes are repelled, not only targeted through killing.

How long does one application last, and when is it waterproof?

Each application provides protection for a full 30 days, and the formula is waterproof 24 hours after application. Apply monthly to maintain coverage throughout the year.

After application, the treatment rapidly spreads over the dog’s body and settles in the sebaceous glands. These glands act as a reservoir, continually replenishing the treatment on the skin; the formula continues working if the dog gets wet after it becomes waterproof.

• Use a monthly application schedule.
• Allow 24 hours after application before relying on its waterproof protection.

Which dogs is this three-dose pack intended for?

This FRONTLINE Shield pack is for large dogs weighing 41–80 lb (18.6–36.3 kg). The Shield formula is effective for puppies as young as 9 weeks old that weigh at least 5 lb (2.3 kg), but this particular pack is sized for the large-dog weight range.

FRONTLINE Shield is the fastest-working product in the FRONTLINE range. FRONTLINE is the number 1 name in flea and tick protection in a BI Marketing Excellence Survey performed by Kynetec in November 2023.

• Three monthly doses are included in the pack.
• Use the weight range to choose the suitable size for your dog.

This treatment suits owners looking for monthly topical flea and tick control for a dog in the 41–80 lb range, including dogs that spend time indoors and outdoors. It is a three-dose pack of waterproof-after-24-hours topical treatment with 30 days of protection per application.