The squirrels are generally not in it for the tomato, what they really want is the water in the tomato. A lot of people (myself included) have eliminated or reduced the problem by having a birdbath or water display near the garden.

That's your livestock.

I'ma need a smaller lasso.

I call those sauce or soup tomatoes.

If you're fast enough you can get the ingredients for tomato sauce and meatballs at the same time :)

edit. sauce or soup meat.

You need to get a Victory Cat.

I actually have two, but the terms of their adoption require that the full extent of the victory be confined indoors. It's a sacrifice I'm willing to make for a kneading cat-doughnut on a cold day.

The country folk solution's a Victory .22 and a bored child who can aim OK.

Or literally a Victory air rifle..

https://m.youtube.com/watch?v=B9bMqnjv2RE

It's probably slugs and not squirrels.

Slugs will eat 1/2 a tomato in a night.