Frontline Plus is worth spending th emoney on each month. I only use it for a few months out of the year. My Chihuahua went on a trip with my husband & I and during the trip 4 ticks discovered her. I was freaked out because I felt like I was constantly having to look her over after she went outside each time (the ticks were at 4 separate times). As soon as we got home I went to my vet and bought Frontline Plus for all our animals. No more ticks! Plus, we have no fleas either. I do not know what I would do if this product were not available. … read full review »