Hi everyone,\n \nA friend of mine just told me that her dogs have been getting fleas even though she uses Frontline. She asked her vet, and her vet said that the topical flea and tick preventative is becoming less effective, similar to what is happening with antibiotics. The vet switched her dogs to Trifexis for the fleas and Frontline Plus for the fleas and ticks. She is worried that it is too much medicine, and I agree that it seems strange. The Trifexis is a pill, and then she has to pay for more Frontline on top of that. I am wondering if her vet is trying to gouge her. Has anyone else heard this?