Walk into any pet pharmacy and the flea-and-tick shelf is overwhelming. The good news is that most modern products work well — the choice is really about format, lifestyle and your dog's tolerance. Always confirm the final pick with your vet, especially for puppies, seniors or dogs on other medication.
Oral preventives
Chewable tablets are convenient, cannot wash off, and many cover both fleas and ticks for one to three months. They suit dogs who swim or bathe often. The trade-off is that the tick has to bite before the medication acts, and a small number of dogs are sensitive to certain ingredients.
Spot-on treatments
A liquid applied to the skin between the shoulder blades, spot-ons spread through the coat's oils. They are affordable and widely available, but you must keep the dog dry for a couple of days after applying and prevent other pets from licking the site.
Collars
A good-quality preventive collar can protect for several months, which makes it low-maintenance. Fit matters — two fingers should slide under it — and it is less ideal for heavy chewers in multi-dog homes.
The bottom line
Match the format to your dog's habits: oral for swimmers, spot-on for budget, collar for hands-off long-term cover. Never use a dog product on a cat, and never double up formats without veterinary advice.
