Thanks.
I can't pull the ivy.
The brick wall of the house is only about 2 1/2 feet from a chain link fence belonging to the adjacent property.
One year, I cut it with a saw at about waist height (because it was the only comfortable position for me) and then drowned the in-ground part in Roundup. It came back....... This past year is when I tried the vinegar, to no effect.
If someone doesn't come up with an answer, I will cut again AND Roundup again, THEN the following week pour ammonia, THEN the following week, vinegar............. and repeat all summer.
I hope SOMEONE CAN TELL ME how long it takes for ammonia to derade so the space can be replanted.