Can I ask a really dim question to the cat experts out there? We've had our cats for just over 12 months and we've applied some flea treatment but I've not worked them since we had them. Is over the counter stuff ok or should I be taking them to the vets and getting them treated there. They've also not had any boosters or injections since we had them. Again, should we be getting some done? It sounds really stupid that I don't know this stuff!!