Will Piss-Off Plants Repel Squirrels?

I have read that the 'Piss Off' plant – Plectranthus (#P4490) will keep cats, dogs and rabbits away. Will it keep squirrels away? They ate all the fruit on my little plum, pear, cherry and apple trees last year.

Since squirrels jump from tree to tree and might not approach your plum tree climbing up the tree trunk, I do not think the 'Piss-Off' plant will have the same effect as animals on the ground.