June 24, 2026 | Dog Food • Senior Dogs
| Product | Type | Duration | Price | Best For |
|---|---|---|---|---|
| Simparica Trio | Oral chew (Rx) | 30 days | $30/dose | Fleas + ticks + heartworm + roundworms + hookworms |
| Seresto Collar | Collar | 8 months | $60 | Budget per-month, convenience |
| Frontline Plus | Topical | 30 days | $12/dose | OTC budget, fleas + ticks |
| K9 Advantix II | Topical | 30 days | $15/dose | Repels mosquitoes + ticks (not just kills) |
Simparica Trio ($30/month, prescription required): One monthly chew covers fleas, ticks, heartworm, roundworms, and hookworms. This replaces 2-3 separate medications, reducing the risk of forgetting one. The sarolaner kills ticks within 8 hours of attachment—before Lyme disease transmission (requires 24-48 hours of tick attachment). Veterinary prescription required, which means an annual checkup (which the dog needs anyway). View on Amazon →
Seresto Collar ($60 for 8 months): At $7.50/month, the cheapest per-month option. The collar releases imidacloprid + flumethrin in low doses continuously. Water-resistant (shampooing reduces effectiveness—replace after monthly baths). The most common buyer complaint: the collar has a distinct chemical odor for the first 3-5 days. For dogs that swim weekly, a topical or oral is more reliable. View on Amazon →
Never use dog flea products on cats—permethrin is highly toxic to felines. For cats specifically: Revolution Plus (prescription, $20/month) covers fleas, ticks, heartworm, and ear mites. View on Amazon →
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