So, I had ordered Frontline Plus for small dogs and puppies but have learned of Nexgard and have been reading up on it and everything else and think Nexgard will be the best choice because of wear I live. With that said, I just contacted chewy.com to return it to them and they refunded me the purchase price and just said to donate it to a pet shelter of my choice! I have never had this kind of awesome service from a large company before!!! Luckly, my animal contol lady here at the Police Department I work at works really close with our local SPCA so this is perfect! I was just blown away and had to share