Consult a professional pest removal service to get rid of chipmunks. Trapping and relocating chipmunks yourself is effective but tedious, and it is illegal in most states for non-licensed persons to trap or relocate wild animals.
If it is legal to trap wild animals in your state, purchase a small cage trap to remove chipmunks humanely. Bait traps with whole peanuts, peanut butter or seeds. Place traps in shady areas where chipmunks are most active. Do not leave chipmunks in traps for more than a few hours. Relocate chipmunks as soon as possible to a location at least 5 miles away.
While predator decoys and chipmunk repellents are available, they are not usually very effective. Avoid poisoning chipmunks, as the poison is toxic and can kill other animals.
To prevent future chipmunk infestations, eliminate food sources from the yard. Every day, clear the yard of any fruits, nuts or seeds that have fallen from trees. Position bird feeders at least 20 feet away from chipmunk activity, and consider purchasing chipmunk-proof bird feeders.
To protect small areas from chipmunks, use bird netting or hardware cloth mesh. An electric fence can protect the entire yard from chipmunks and other pests. Do not allow any branches to hang near the fence, or chipmunks will climb back into the yard.