I've had mixed results with that. If I add a robots.txt entry to deny them, they do appear to stop displaying the cached content but then if long after the ori

I've had mixed results with that. If I add a robots.txt entry to deny them, they do appear to stop displaying the cached content but then if long after the original content is gone from my site if I also park the domain and forget to maintain the robots.txt entry the cached content starts showing again meaning they never actually got rid of it but rather paused displaying it.