Using antifreeze to kill any plant, including hedges, poses poisoning danger to pets, wildlife and small children if they should ingest any part of the treated soil or plants. The safest way to kill unwanted hedges is to cut the bushes off at ground level, dig up the roots and use a synthetic or organic root killer to destroy remaining roots.
About the Author
Based in Ohio, Deborah Waltenburg has been writing online since 2004, focusing on personal finance, personal and commercial insurance, travel and tourism, home improvement and gardening. Her work has appeared on numerous blogs, industry websites and media websites, including "USA Today."