You can purchase some flea and tick treatments, especially topical solutions, collars, and shampoos, without needing a prescription. These are available at pet stores, supermarkets, and online shops. These products contain active ingredients that are generally considered safe for use, like the insecticides imidacloprid and permethrin. 

Others might have natural ingredients like garlic or brewer’s yeast. While brewer’s yeast could offer insect-repelling advantages and garlic has some stories supporting its use, it’s worth noting that scientific proof of their effectiveness is lacking. Also, it’s important to be aware that garlic can be toxic to dogs, and some experts suggest avoiding feeding your pet even small amounts of it.

While certain pet owners choose over-the-counter (OTC) treatments for their convenience and easy access, it’s crucial to take into account your dog’s unique health situation, age, size, and any possible interactions with other medications they might be using. A veterinarian can offer personalized guidance and assist you in selecting the most suitable and efficient flea and tick treatment for your dog.

If you’ve decided to go with an OTC treatment, here are the best flea and tick medicines for dogs.