Dogs are generally happy to return to us, unless there is something more 'exciting' going on, like a squirrel to chase or a scent trail to follow. As Treacle is a 'nose dog', he will be constantly on the lookout for the next smell and will want to go and discover its source. I find most success by using the long line method. Having him on a long line and practising recall with very high value treats like hot dog and chicken. The key is in getting him to associate coming when he is called with something good happening; something more satisfying than chasing a new scent. We start the training indoors, then move to the garden, then to a 'boring' place outside and then to more 'exciting' outdoor places. Ideally, we'd add in 'challenges' like having a friend bring their dog or throw a ball, to ensure he can overcome the instinct to go after that more exciting thing, and still come to you. If he cannot, he gets no reward or praise. Over time, as we can trust him, we make the line longer and longer.