Mosquitoes are the sole cause of heartworm in your pets. While Mosquito Authority can remove mosquitoes from your yard, the only way to ensure complete protection from the devastating and dangerous effects of heartworm is preventative medications from your vet.

If you want to learn more about the life cycle of heartworm, this video is a great resource. Be warned, it is a bit graphic, as it shows actual heartworms during a surgical procedure.