['I planted sod in my backyard a couple weeks ago and it looked great until my dog got a hold of it.', 'oh, well that sucks! It can be very aggravating to spend time working on something, and then have it destroyed!', 'Yeah I had it fenced up for a couple weeks till I thought it was good, the first day I take it down... wasted.']
Yes, not only a waste of your time, but the money. No doubt, very frustrating, and I'm sure you wanted to teach the dog a lesson
My dog keeps running around the yard in the spot where I just planted sod.  I thought the grass was good to go but it looks like he's destroyed it.