Myers says you can simply keep cutting poison ivy back to remove it. "Continually removing the above-ground portion eventually kills the plant, but you must be persistent and thorough," she says.
Dealing with poison ivy, oak, or sumac exposure can be uncomfortable and frustrating. These plants contain urushiol oil, ...
you should physically remove it instead of merely killing it. Dead poison ivy vines and leaves still contain urushiol and can cause a rash even after being dead for several years.