Oliver goes on the naughty spot, which is usually the middle of any room. I will give him a firm no if he is doing something naughty/dangerous, second is a warning of the naughty spot, third - he goes on the naughty spot. There are times he will stay there for his 1.5mins, but on the odd occasion he thinks its highly amusing to keep running off, I will sit with him, between my legs, facing away..kinda holding/restraining him but not in a nasty way will sit with him for that time.
It is really effective for us..as when we started it, he was on the spot 4-5times a day..now were lucky if its 2-3times a week. x