I lent my trap out so that was out but I tried something else and it worked. So far - I didn't see any more damage.
I bought 36"X15' hard plastic netting (small holes) that I found at Home Depot. I made three panels of 12 inch X15 ft panels - I bought four rolls. I stapled the panels on the ground, making sure I overlapped my current netting that is already stapled to the ground. This netting sits very flat on the ground with no gaps. So if the squirrel wants to dig under, he has to dig a 12 inch tunnel to get to the grapes.
Of course, I ran out of netting at about 7:00 pm and was too tired to go back to Home Depot - it would have been my fourth trip. It was a small area so I used a lot of sod staples instead. This was a lot of work and I have three more rows to do (3 other rows are new plants so I can wait for next year). Luckily, the animals haven't discovered my other grapes.
Now I see a lot of bees - I'm thinking of cutting out the bad fruit but my husband wants to use Oxidate. Any ideas on bees?