The main problem I have had with squirrels is eating all the bird seed and tearing the bird feeders apart. Now that we have invested in heavy duty squirrel proof feeders, that is taken care of.
But while we were figuring all that out, we did try the squirrel table. We had one just like this:
The ear of seed corn sits on a spike. It is very cute watching them eat at the table.
We also had a whirlygig corn feeder like this:
Good for lots of entertainment. The squirrels jump on it, ride it around eating as they go, until they fall off and then run back up and try again.
So these were amusing and entertaining. But they did not stop the bird feeder destruction in the slightest. We had lots of squirrels and squirrels will eat any given amount. Remember they are not just eating the corn and seed, they are storing it for winter. So they will fill their cheek pouches full and run off to their nest. Come back a few minutes later emptied out to do it again. When they could manage to get the corn off the spikes, they would carry a whole corn cob off with them. Does not slow them down at all from eating everything else.
But I'm with Gary. They like nuts and seeds. They will if allowed come and take bites out of tomatoes to get the juice. I never saw them eating anything else from my garden.
I am interested to see how it goes this year. We do have squirrels at our new place also, though fewer, since it isn't as woodsy. But we have a dog, who stays in our fenced in yard a lot of the time. His favorite sport is squirrel chasing (fortunately he can't catch them). So I think we have the squirrel issue taken care of.