I cannot seem to get rid of the fleas on my kitten. Every time I take her to the vet they tell me she has fleas (different vets too). And every time I buy the medication they recommend and apply it exactly as the instructions say. Nothing helps. I have tried the collars, dips, the stuff on the back of the neck. I never see her scratch and I have never seen a flea on anything else (carpet, sofa, etc.) so I don’t think she has a lot, but every now and then I will see one crawling on her. She has super think fur. Could that be the reason they are hard to get rid of? Any suggestions on what I can do to finally get rid of them?