Invasion of Kudzu Bugs....HELP

I have a wisteria next to my house that is covered by these bugs, they are literally so thick the vines look black...it's horrible. I would like to know if anyone else has successfully gotten rid of them and what they used. The other problem I have is that the vine is growing on a very tall pergola...so I may actually have to get on a ladder to spray anything. I'd also like to know if using a sprayer connected to the hose would be more effective for getting whatever I spray all over these vines, that are way up high.
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