10 Best Flea Treatment For Dogs 2025 in Canada

K9 Advantix II is a topical flea and tick treatment designed specifically for extra large dogs over 25 kg (55 lbs). It is convenient to apply and intended for monthly use, offering year-round protection by killing fleas, ticks, lice, and mosquitoes on contact before they bite your dog. This contact kill method helps reduce the chance of your pet getting itchy or irritated from bites and helps break the flea life cycle, which is useful for controlling infestations not just on your dog but around your home as well.

The treatment is safe for dogs and puppies aged 8 weeks and older, though it should never be used on cats, as it can be harmful to them. One practical benefit is that it is water-resistant, so it maintains effectiveness even if your dog gets wet or is bathed. Since this product is formulated for extra large dogs, it’s important to ensure the dosage fits your dog's weight to avoid under- or overdosing. There is no noticeable scent, which can be a plus for pets sensitive to smells.

K9 Advantix II provides a reliable and easy-to-use solution for large dogs needing broad protection against common pests, making it a suitable choice for monthly maintenance.

K9 Advantix II Flea and Tick Treatment is designed for extra large dogs weighing over 25 kg (55 lbs), making it a good choice if you have a big dog needing flea control. It's a monthly topical liquid that you apply directly on the skin, which makes it easy to use and helps provide consistent, year-round protection. Besides killing fleas and ticks on contact (so they don’t have to bite your dog), it also targets lice and mosquitoes, offering broader parasite protection. This helps break the flea life cycle, which can reduce insects not just on your dog but also in your home.

It’s safe for dogs and puppies aged 8 weeks and older, but it should never be used on cats, as it can be harmful to them. The product is scent-free and allergen-free, which might be good if your dog has sensitivities. Monthly use is typical for flea treatments. Information on water resistance is not specified, so it is advisable to check how soon after application you can bathe your dog or if swimming affects its effectiveness.

If you have a large dog and want a reliable, easy-to-apply treatment that helps protect against multiple pests, K9 Advantix II is a solid option. Just be careful with other pets in the household, especially cats.

K9 Advantix II is a topical flea and tick treatment designed for large dogs weighing between 11 kg (24 lbs) and 25 kg (55 lbs). It offers convenient monthly use, making it easy to maintain year-round protection. The treatment kills fleas, ticks, lice, and mosquitoes by contact, meaning these pests don’t have to bite your dog to be affected, which helps in reducing irritation quickly. It also helps break the flea life cycle, so it not only treats your dog but helps control fleas in your home environment.

This product is safe for puppies as young as 8 weeks, which is useful if you have a growing dog. However, it is very important not to use this on cats, as it can be harmful to them. The product is allergen-free and unscented, which is a plus for dogs with sensitive skin or noses. K9 Advantix II typically offers some protection even if your dog gets wet, but reapplication might be needed after heavy bathing or swimming.

Its strength lies in comprehensive parasite protection beyond just fleas, covering multiple common pests. The main drawback is the weight range limitation—this formula is specifically for medium to large dogs, so it’s not suitable if your dog is smaller or larger than the specified bracket. If you have a dog in the right weight range and want a simple, effective monthly treatment that covers multiple parasites and supports flea control at home, K9 Advantix II is a strong choice. Just be cautious to keep it away from cats and check if water exposure might require reapplying.