Well you can use 24D to kill the weeds as long as you don't mind possibly killing the Juniper as well. As far as the ivy, test out some Roundup T/O (not Roundup Pro), Since the Roundup T/O has no surficant it shouldn't even hurt the ivy but it should waste the weeds (unless they have a waxy coating as well). Test it in an inconspicuous spot. Also if the customer asks what you are spraying don't say roundup, they will freak out and swear that you are trying to kill their ivy. Good Luck. By the way, I tried using scythe and roundup to kill ivy when I first started and couldn't figure out why it wouldn't die. I think you will be fine with the roundup T/O.