Hello - Ivy can be a real pain as you know. I do not like to use chemicals to "kill" plant matter (grass, weeds, etc) The best method is to eliminate the ivy by digging it up at the base of the wall. Depending on how much you have and what type of walls the home is (brick, wood, vinyl, etc) will determine how to go about removing it from the surface. Usually it requires a bit of effort to restore the walls to an "ivy free" state. As you know it gets into every crack and crevise. Let me know what size area you are dealing with and the exterior surface, and I'll get back to you with more detailed info on removal.
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