If anyone is successful with getting time outs to work pleeeeese help...

I have been doing time outs with my DD since she turned 2. Up until recently she was just put in the spare room with the door closed. She now thinks this is a big joke and whenever she gets put in there, she either just laughs and plays or she delibratly wees on the floor or bed!!

I tried putting her sitting against the wall. She just continually gets up. All the books I have read just say calmly walk her back to the wall and don't say anything. She just ends up thinking it is a really fun game and eventually just runs away from me so I have to go and get her to put her back. If I stand close to her she just thinks its an even better game to try to get around me. If I hold her there she just enjoys squirming around...

Did anyone start with a child like this and get them to do time out? At the moment she is looking for boundries and I don't feel like I am providing her with any.

Would love to hear how others do it