Frontline Plus for Dogs Medium (23-44 lb) Flea and Tick Treatment - 6

Our review of Frontline Plus for Dogs Medium focuses on pet owners who need a monthly topical that tackles fleas, ticks and the life stages that perpetuate infestations. The bottom line: this product is best for dog owners seeking a fast-acting, once-a-month treatment that is waterproof and formulated to break the flea life cycle by killing adult fleas as well as eggs and larvae. It is aimed at dogs 23-44 pounds and delivers six doses, making it a practical choice for ongoing protection when applied correctly every month.

Key Features

• Fast-acting protection: Starts killing adult fleas and ticks to reduce biting and immediate parasite loads on the pet.
• Breaks the flea life cycle: Contains an insect growth regulator that targets flea eggs and larvae so new infestations are less likely.
• Broad parasite coverage: Also targets chewing lice and mites in addition to fleas and ticks for wider protection.
• Waterproof after 24 hours: Resists bathing and rain once dry so the monthly dose remains effective with normal outdoor activity.
• Easy single-point application: Applied to a single spot on the dog and spread across the skin for whole-body coverage without daily dosing.

Who It's For

This treatment fits owners of medium dogs between 23 and 44 pounds who want a single, monthly topical to help prevent fleas and ticks, and who prefer a waterproof option that endures normal outdoor exposure. It is also suitable for households that value a product formulated to attack multiple life stages of fleas to reduce the chance of reinfestation.

Those who should look elsewhere include owners of dogs outside the stated weight range or puppies under eight weeks, and people seeking an oral systemic rather than a topical. If a pet has a history of sensitivity to topical treatments, consult a veterinarian before use.

Pros & Cons

Pros

• Effective at killing adult fleas and ticks, providing quick relief from parasites.
• Formulation includes an insect growth regulator to kill flea eggs and larvae and help prevent reappearance.
• Waterproof after 24 hours so normal outdoor activities do not immediately reduce protection.
• Convenient six-dose pack supports consistent monthly application for ongoing control.

Cons

• Effectiveness reports are mixed among users, with some saying it did not control fleas in tougher infestations.
• Topical application may not be preferred for dogs with sensitive skin or owners who want an oral option.

Specifications

Brand	Frontline
Product	Frontline Plus for Dogs Medium
Weight range	23-44 pounds
Contents	6 monthly doses
Active ingredients	fipronil and (S)-methoprene
Age minimum	Puppies 8 weeks and older
Water resistance	Waterproof after 24 hours

Our Verdict

Frontline Plus for Dogs Medium is a sensible, widely used choice for owners who want a monthly topical that targets adult fleas, their eggs and larvae plus ticks and lice. It delivers convenience and broad coverage at each monthly application, making it good value for those who see reliable results in their environment. If a household has inconsistent results with topicals, combine use with environmental measures or consult a vet for alternatives.

Frequently Asked Questions

Can I use this on puppies?
Yes, it can be used on puppies 8 weeks and older and weighing at least 5 pounds, but follow weight and age guidelines carefully.

How often should it be applied?
For best results apply once a month; protection is intended to be maintained by monthly application.

Will it wash off in the rain?
It becomes waterproof 24 hours after application, so avoid bathing or heavy exposure during the first day.