South Florida's warm climate can support year-round mosquito, flea, tick, and intestinal-parasite exposure. Prevention should be selected for the individual pet, used exactly as labeled, and paired with testing and environmental control.
Written or medically reviewed by Dr. Susset Diaz Castillo, DVM, PhD. Last reviewed: 2026-08-28.
Quick Summary: South Florida's warm climate can support year-round mosquito, flea, tick, and intestinal-parasite exposure. Prevention should be selected for the individual pet, used exactly as labeled, and paired with testing and environmental control.
Mosquitoes that transmit heartworm can remain active through much of the year in South Florida. Fleas may persist indoors and outdoors, ticks occur in local environments, and intestinal parasites can spread through soil, feces, prey, standing water, or intermediate hosts. Indoor pets are not guaranteed to have zero exposure.
Risk is not identical for every dog or cat. Species, age, weight, pregnancy, seizure history, current infection status, outdoor access, hunting, travel, household pets, and medication interactions all affect product choice. “Natural” does not mean safe or effective, and a product labeled for dogs can be dangerously toxic to cats.
A plan may include heartworm prevention, flea and tick control, periodic testing, fecal examinations, prompt cleanup of feces, and household or yard measures. Not every product covers the same parasites or life stages. Give only the correct species and weight-range dose on schedule, and ask before combining products.
At least annual heartworm testing is commonly recommended for dogs even when prevention is reported as consistent; the veterinarian may recommend a different interval for an individual patient. Cats can also develop heartworm-associated disease, but testing and prevention decisions differ from dogs. Fecal testing helps detect some intestinal parasites, although one negative sample cannot exclude every infection.
Pick up feces promptly, prevent scavenging and hunting when possible, wash bedding, check pets after brush or tall-grass exposure, and address fleas on every susceptible household pet under veterinary direction. Keep cats away from canine topical products until the application site is dry as directed. Human pesticides, essential oils, garlic, and unapproved home remedies can harm pets.
Arrange veterinary assessment for coughing, exercise intolerance, unexplained weight loss, vomiting, diarrhea, visible worms, pale gums, intense itching, hair loss, skin infection, or attached ticks. Breathing difficulty, collapse, marked weakness, severe anemia signs, seizures, or rapidly worsening illness require an emergency hospital. Never start or double a preventive dose to treat symptoms without guidance.
VestaSoul — My Vet At Home® is an appointment-based, non-emergency mobile veterinary practice serving select areas of Miami-Dade County and select areas of Broward County. When available and clinically appropriate, an in-home examination and selected diagnostics may be provided during an All-Included Visit. A standard All-Included Visit is $695 per pet and includes a $250 Medical Credit toward eligible laboratory testing performed during that visit. Same-day availability is not guaranteed, and pets needing emergency care, hospitalization, advanced imaging, surgery, or continuous monitoring require an appropriate facility.
This guide provides general education and cannot diagnose an individual pet or replace an examination by a veterinarian who has reviewed that pet's history.
Year-round exposure is possible, but the safest product and schedule depend on the individual pet. A veterinarian should assess risk, testing needs, contraindications, and adherence.
No unless that exact product is specifically labeled and directed for the cat. Some canine ingredients, including concentrated permethrins, can cause life-threatening poisoning in cats.
No. Shedding can be intermittent, and tests do not detect every parasite equally. The veterinarian interprets the sample with exposure, symptoms, and prevention history.
Dr. Susset Diaz Castillo, DVM, PhD is the veterinarian behind VestaSoul — My Vet At Home®. VestaSoul — My Vet At Home® is a mobile veterinary house-call practice serving select areas of Miami-Dade County and select areas of Broward County. Learn more at Meet the Vet.
This article is for general educational purposes only and is not a substitute for an in-person examination, diagnosis, or treatment by a licensed veterinarian. If your pet is showing severe or rapidly worsening symptoms — such as collapse, difficulty breathing, uncontrolled bleeding, seizures, suspected poisoning, or an inability to urinate — go to the nearest emergency animal hospital immediately. VestaSoul — My Vet At Home® is an appointment-based, non-emergency practice and does not provide emergency or after-hours care.
VestaSoul — My Vet At Home® is a mobile veterinary house-call practice serving select areas of Miami-Dade County and select areas of Broward County.