Q.How can I kill English Ivy?
Here in Medford, Oregon, I have sprayed English Ivy with Round Up at the highest label rate. I have also sprayed a different section of English Ivy with Brush B Gon also at highest label rate. Both times I added spreader to the spray mix. Both times I thought I was spraying new leaves. I am not getting a kill of the Ivy. How can I kill English Ivy?

I understand your frustration - English Ivy is not easy to get rid of! This article will give you some good suggestions on how to eradicate english ivy, such as lacerating or cutting the plant's stems prior to herbicide application:
https://www.gardeningknowhow.com/ornamental/groundcover/english-ivy/kill-english-ivy.htm