Tats ~ I can relate! That is why I take mine to the groomers . . . I could never do as good a job, and would feel like I wasn't getting all the shampoo out.

If Cody is digging off-limits, try this: Just take a shovelfull of poop and distribute at the site! My girls were digging under my miniature Japanese Maples and disturbing the surface roots; one tree almost perished last season, but has rallied back since I discouraged the dogs with that tactic. There is plenty of other tree shade in the back yard for them to find relief.