Our chipmunks do that too. I thought they all climbed actually, but not sure. We'r also have a lot of squirrels as well as wild birds that can get over any fence. I simply will try to keep out what I can, but I know something will get in there. The rabbits are a definite problem, but so are the squirrels. It is just easier to keep rabbits out.I'm guessing I have a different species of chipmunks here in New England. They frequently climb fences and trees to get to where they want to go.
That said, anybody have a solution for keeping squirrels out of the garden?
I certainly do not want to poison them. I will not go that far over squirrels. Netting everything seems expensive and cumbersome. Perhaps there's a flower they cannot stand stand the sent of? I would gladly mix another flower in with the marigolds wev are planning on.

obviously things could be a lot worse...
They also climbed our corn stalks last year, striped the husk and chewed every kernel of the cob, leave the bare cob still attached to the stalk with the husk hanging. 