I have never had any chipmunk problems but We did have problems with racoons which in my opinion can be worse. We never had the racoons in our house but did have one sleep over night in our chimney(we now have a chimney cap). Our neighbor wasn't as fortunate and had a great deal of damage done to her house. She had to leave her house for a while and hired someone to humanely trap the animals and move them far from her house. If the predator urine doesn't work or if it makes matters worse such as the chipmunks getting into your house you will either have to hire someone or trap them yourself. I don't recommend that you trap them yourself as they might have rabies and a professional trapper will have all of the traps he might need as well as know how to safely get rid of the chipmunks. Good luck!