I've got a friend of mine with an Akita that LOVES to DIG. Unfortunately it's to the point now where he's actually piercing the poly tubing, ripping up the spaghetti, and just creating an all around havoc. I've done my share of work at their house to keep his tubing as maintained as possible but the dog is always one step ahead of me. Is there any solution that you have to prevent this? They're asking me to tear up all the poly tubing and run it through PVC now but I want to be sure there isn't an easier option. Thanks for the help!