pretty sure it's dog poo, but it could be cat. He only does it occasionally and always the little ones. I have kept him on the lead for periods of time to break the habit as it were, but it is not what I want ultimately for him........ we live in the country with big garden backing on to a lane leading to open countryside......perfect ....I can't imagine having to keep him on a lead forever, but I take your point that it may be sensible for now. (Have just ordered some tree bark powder, thanks for that!)