I have treated my cat with Frontline, then Advantage and now back to Frontline but I keep finding live fleas on him, gross. I had the house treated but this week the kids have new bites! I dread swimming lessons because my DS has a load on his arm that he scratched so they haven't healed. Feel mortified! Cat treated again this morning with Frontline. Vet said F doesn't work so sold me Advantage. That didnt work either so I am back to F. Lady at Pets at Home said if he was rained on within 48 hrs of being treated it would have washed off. DH gone away and I am faced with weekend of washing.His parting words were 'the bloody cat will have to go'. That seems really shallow as there are so many unwanted cats in the world but I am fed up with it! Kids would be upset too. Don't know what to do!!