Hi MaryMary...
I am there with you on the Frontline aspect, I stopped giving this to my cat years ago... something just felt wrong in applying it to my cat's fur! Touch wood, she seems ok, she's not a very sociable cat, so she doesn't seem to get bites so often these days... and I've not spotted fleas on her for years now... but if that changes, I'll bear the Neem Oil in mind
I've heard an awful lot about Neem, a very good nutritious oil. I have the same problem with jewellery, rings, ear-rings... leave them on too long and they start itching terribly... Necklaces are the worst offenders... and it doesn't matter if its cheap or expensive jewellery, it all has the same effect.