My Rotties had fleas last month so I did some research online to find a cheap flea killer that works well. People have recommended Frontline for dogs in the past, so I decided to try it this time around. I saved over $30 on Frontline at PetCareRx - Discount pet meds, pet medications and pet medicines available at our pet pharmacy and received free shipping. I will never buy Frontline at my local pet store again!!!