Our boy was always on frontline but it stopped working and he developed sore skin and lost some hair as vet said it was a reaction.
Vet gave prescription for steroids and advantage vet treatment.
I started flea treatment straight away with new lot and it worked for about 3 weeks, and then noticed a flea on him again (we have 2 cats who like to play in woods and even with treatment bring a few now and again.)
I gave treatment a week earlier, but after 5 days his back to scratching and biting again, so clearly it's not working [anger]
Anyone know anything I can give ontop of what his on?? I don't fancy another vet trip just to say its fleas!!