There are a few common mistakes that people make when deworming their dogs. One of the most common mistakes is using the wrong wormer. There are many different types of wormers available, and not all of them are effective against all types of worms. Additionally, some wormers can be more harmful than helpful if used incorrectly. It is important to consult with your veterinarian to determine the best wormer for your dog. Another common mistake is not following the directions on the wormer package correctly. It is important to read the instructions carefully and follow them exactly to ensure that the wormer is effective. Many wormers require multiple doses, so it is important to complete the full course of treatment as prescribed by your veterinarian. Finally, some people mistakenly believe that deworming their dogs once will protect them from worms for life. However, this is not the case. Dogs can become infected with worms at any time, and it is important to deworm them regularly as recommended by your veterinarian.