We have looked and looked and looked and can not find fleas on our cat. She has been with us for 3 weeks and in the last 2 she has started scratching a bunch around the head and neck but we can not see any fleas. SOOO I read that is could be a food allergy and switched her back to the "better" food and she is scratching a lot less. She scratched (just a little not a heavy scratch) about 3 times last night in about 4 hours. Is this normal? Do they scratch just to scratch or is it fleas even if I can't find any? I even looked where she is laying down and picked through the hair she is shedding and there are no small dark spots that smear into blood - flea droppings... Any ideas please!!!! She did not do well with the medicine from the vet after her surgery (get fixed) so I hate to put anything on her (frontline or advantage) if she doesn't need it. Thank you!!!! Debbie