Introduction: Why Summer Heartworm Prevention Matters for Cats
When we think of heartworm disease, we often associate it with dogs. However, cats can also suffer from this potentially life-threatening condition. While heartworm in cats is less common, it is usually more difficult to detect and treat. The risk increases significantly during summer months due to rising mosquito activity—the primary carrier of heartworm larvae.
This blog covers the top heartworm prevention options for cats, especially during summer, and how you can keep your feline friend safe and healthy. If you're living in warmer regions, heartworm prevention should be a top priority.
What Is Heartworm Disease in Cats?
Heartworm disease is caused by a parasite called Dirofilaria immitis, transmitted through mosquito bites. While dogs are the primary host, cats can become infected when bitten by an infected mosquito.
Once inside the cat’s body, heartworm larvae can travel to the lungs and heart, causing inflammation, breathing issues, coughing, and even sudden death. Unfortunately, there is no approved treatment for heartworm infection in cats, making prevention the only option.
Why Summer Increases the Risk of Heartworm
Summer creates the perfect breeding ground for mosquitoes. Warm, humid weather encourages mosquitoes to multiply, increasing the risk of bites. Cats that roam outdoors—or even stay near open windows—are at risk during these hot months.
Regions with long, warm summers see heartworm cases rise sharply from May to September.
Signs of Heartworm Disease in Cats
Unlike dogs, cats often show subtle or no symptoms of heartworm until the disease becomes serious. Some signs to look out for include:
- Coughing or wheezing
- Difficulty breathing
- Lethargy
- Vomiting
- Weight loss
- Sudden collapse or death in severe cases
Because of these vague symptoms, many cases go undiagnosed. That's why year-round heartworm prevention is highly recommended, especially during summer.
Top-Rated Heartworm Prevention Products for Cats
Here are some of the most trusted and vet-recommended heartworm prevention treatments for cats:
1. Revolution Plus (Selamectin and Sarolaner)
- Protects against: Heartworms, fleas, ticks, ear mites, roundworms, hookworms
- Frequency: Monthly topical application
- Why it's great for summer: Revolution Plus also protects against fleas and ticks, which are more active in summer.
- Bonus: Waterproof and safe for cats as young as 8 weeks
2. Advantage Multi for Cats (Imidacloprid + Moxidectin)
- Protects against: Heartworms, fleas, ear mites, roundworms, and hookworms
- Frequency: Once a month
- Great for summer: Offers broad-spectrum protection with a fast-acting formula
- Note: Cats must weigh at least 2 pounds and be older than 9 weeks
3. Bravecto Plus (Fluralaner + Moxidectin)
- Protects against: Heartworms, fleas, ticks, roundworms, hookworms
- Frequency: Every 2 months (longer-lasting)
- Summer advantage: Reduces the stress of monthly application and offers continuous protection
Tips for Using Heartworm Preventatives Effectively
- Start early: Don’t wait until peak summer. Begin before mosquito season.
- Stay consistent: Set reminders never to miss a dose.
- Indoor cats are still at risk: Mosquitoes can easily enter homes.
- Regular vet checks: Annual tests can detect early signs of infection.
- Use only vet-approved products: Avoid using dog products on cats—they can be toxic.
How to Reduce Mosquito Exposure for Your Cat
In addition to preventatives, take the following steps to protect your cat from mosquito bites:
- Install screens on windows and doors.
- Avoid letting your cat outdoors during dusk and dawn—mosquitoes are most active at these times.
- Remove standing water around your home (flower pots, pet bowls, drains).
- Use cat-safe mosquito repellents (never use human or dog repellents).
Buying Heartworm Prevention Online: Save More Without Compromising Quality
If you're looking to save money on heartworm medicine, consider ordering online from trusted sources like 79pets.com. We provide:
- FDA-approved medicines
- Affordable pricing compared to vet clinics
- Fast delivery across the US
Final Thoughts: Make Summer Safe for Your Cat
Heartworm disease is preventable, but the consequences of skipping protection can be deadly—especially during mosquito-heavy summer months. Prevention is simple, effective, and far less expensive than treating a critically ill cat.
Whether your cat lounges by the window or explores the backyard, make sure they’re covered with a vet-approved monthly treatment like Revolution Plus, Advantage Multi, or Bravecto Plus.
Your cat’s safety starts with you. Protect them from unseen summer dangers—and enjoy a worry-free season with your furry friend!
