This is such a horrible habit. We have always had dogs and we train ours to perform in one spot in the garden. As we all know dogs only want to please - they will learn quickly to go in the same spot. Pick up, quick hose of grass, done. I always take bags out just in case, as when our dogs have got older they can't always manage a longish walk without some 'relief'! and we just take it home and put it in the dustbin. I can't understand the mentality of taking your dog out for a poo - you take it out for a walk, surely, not a poo; if that happens it should be incidental, not part of the walk. There. I've started ranting now; it makes me so cross because people get niggly with dogs instead of the lazy owners. When we lived in London the local park was a nightmare - the entrance to the park was a wide expanse of grass and it was so festooned with poo that in the end I didn't take the children there - the lazy dog owners just let the dogs go at the gate, watched them perform, and then called them back. I did speak politely to one man and said my daughter's shoes had got covered in mess and didn't he think it was better to pick it up? It took me about a week to get over the verbal assault - I was a 'snob', a 'dog hater' - it was horrible; I am really quite timid!