Thanks Gypsysmum. I do understand what you are saying but it did work really successfully with the puppy (a sheltie) we had when the children were small (some years ago!). I do remember though that we didn't teach him to pooh in his 'patch' until he was a year old, when we moved house and I didn't want pooh on the lawn with young children. He did pick it up quite quickly and seemed unscathed by the experience. I need to give this some consideration though. We have now gone back a step with rewards and now follow Evie around so that we can treat immediately, to make sure that we have really got on top of house training.