Perhaps put out some water for them? They might just be thirsty.
If that does not work then buy them some wrapped fleer double bubble gum (not the round ones) and put it where they find it. Can’t digest it and it will slow them up for the hawks who you do not want to poison. ( If you find empty wrappers then they found it. )
Good luck!
And NO, I absolutely never use poisons.
Using poisons on or around the vegetables I intend to
eat seems just a wee be stupid - don't ya think?
But hawks are the final step of the chipmunk disposal process.
I place the deceased chipmunk carcasses from the trap on
an old log/fallen tree in some nearby woods - and the
red tailed hawks carry them away to feed their young.
I've watched the process.
So the circle of life completes - and I still get my tomatoes.
Some of them, anyway.