I was just wondering if anyone uses Frontline throughout the year or for just half the year. We live on Long Island in NY and I hate giving the dogs needless meds but know they need this in the summer time here but feel that in the wintertime it isn't necessary. I usually start giving it to them April 1st and they get their last dose October1st. I was talking to a friend that gives it year round here but I just assumed since it was for fleas and ticks that they died during the cold months. Am I wrong? I give the heartgaurd year round but not the frontline.