My 90 yr old friend has been cohabiting with the pocket gophers for 60 yrs. They will aggrevate one another...them moving her plants around for her and she pouring vinegar into their burrows. They have always been a nuisance but she never wanted to do anything extreme to control them...until now. She purchased a new car a few months ago and they got up into her car and chewed and inserted nuts and have done some damage under the hood. She is none too happy and is ready to pull out the big guns. Does anybody have any suggestions. Thank you for any suggestions you can give me to share with her!