[alex221]

I have found low-fat hotdogs work best for us during training. They leave no crumbs to go after.

For leash training at potty time, try having a previous "deposit" in the area you want them to go. I've found Alex seems to like to smell the area that he's used previously and make "further contributions" to the same spot. Of course, he's also a "traveling" pooper so that tends to be a bigger area then it has to be.