The idea of your pet being infested with parasites is a disturbing thought, but it’s also a medical issue that can have serious consequences if not properly dealt with or prevented.

We emphasize the importance of preventing both internal, and external parasites. Through preventative measures and client education, we can help successfully protect your pet. The cost of prevention is minimal when compared to the cost of treatment, which can also be expensive and stressful for you, and your pet. Parasites like heartworm can even be fatal, so preventing parasites is of the utmost importance. Read on, or call us today to ask how we can help protect your pet from these threats – we offer many proven and effective treatment and prevention options to help keep your pets safe, many of which are listed below. Note that more information can be learned about each specific product by clicking their logo and visiting their product’s website.

General Information About Fleas, Ticks, and Heartworm

We typically recommend that pets stay on flea and tick preventative year-round, as even here in New Hampshire, fleas can stay active through the winter inside buildings, and on other animals that your pet may come in contact with or be near. A great resource that provides information about both fleas and ticks and how they impact both our furry and human family members can be found here.

Heartworm disease is spread through the bite of mosquitoes, and it can be fatal for pets if not treated, as these parasites actually live and grow in the bloodstream, lungs, and heart of the animal. Here in New Hampshire, we recommend giving heartworm preventative to dogs year-round to avoid this deadly, but easily preventable disease. Detailed information about heartworm disease can be found here.

If you have any questions or would like more information about preventable parasites that live in our area and how to combat them, or to get more information about the products we offer to help in that fight, always feel free to give us a call or drop by and we will be happy to discuss reliable preventatives which will best meet the unique needs of your pet.

Flea and Tick Preventatives for Dogs:

Advantix II (for Dogs)

Monthly topical Flea, Tick, and Mosquito, and biting fly preventative.

Bravecto (for Dogs)

12 week chewable tablet for flea and tick prevention.

Seresto Collars (for Dogs) 

8 months of wearable flea and tick prevention.

Flea and Tick Preventatives for Cats:

Bravecto (for Cats)

12 week topical flea and tick protection.

Seresto Collars (for Cats) 

8 months of wearable flea and tick prevention.

Heartworm Preventatives (for Dogs):


Monthly beefy chewable for heartworm, roundworm, and hookworm prevention.


Monthly chewable Heartworm, roundworm, and hookworm prevention.

Special Deals

Here at Cilley Veterinary Clinic, we are very happy to be able to offer a number of veterinary-exclusive special deals and offers on preventative products that can help protect your pet; these can be found here.