DD1 (6) and DD3 (3)are doing my head in at the moment. If they are not at each other's throats they are ganging up and mucking about for me - running around in shops, making a complete mess in their rooms, getting up from the dinner table whilst in middle of meal etc etc. You get the idea. DD1 has just started doing that horrible imitiating face (of me) when I tell her off, or even saying 'whatever!' which I didn't think would come for years!
I am a total loss what to do. They egg each other on totally to wind me up. I have tried bribing with treats, but they're not interested, I have tried taking away things but they don't seem bothered. They just seem to get some sort of sadistic pleasure out of me tearing my hair out. I even tried sitting down with the 6 year old and saying what a nicer home environment it would be and how we would all be happy if the two of them just behaved.
I'm probably going about it completely the wrong way, so please please anyone give me some hints on what to do.