Mikey, da stick is just perfect for ya isn't it? I bet Mom is worried you will swallow bits and pieces. So hard to decide, ball, stick, hmmm.

This is something you could 'try' I had to put this along the base of my fence: Go to the Home Depot site, and put this in the search box:
Southern Patio 2 ft. Resin Wrought-Iron Edging

I had to do this as the fluffs want to slip under the fence. So it may not work for a digger; just one idea to consider.

I know one friend of mine locally had to dig down and put in concrete under her fence to stop her digger getting out!

You may also find ideas if you search Google, try things like: stop dog dig fence