We have done it all, given them flea treatment, flea collars, used flea spray, we have washed all bedding repeatedly, even threw the last lot out and started from scratch, steam cleaned all floors and bathed the dogs regularly in treatment, yet everytime I look both dogs (a cockerpoo and a greyhound/lurcher) have very large, adult fleas. We have treated exctly as per vet advice. What is going on, we have never had this problem before!! I have spent an absolute fortune so far and getting nowehere. Dogs however seem very unbothered by fleas!