User-agent: Mediapartners-Google
Disallow: /wp-admin

User-agent: Googlebot
Disallow:/wp-admin/

User-agent: AdsBot-Google
Disallow:/wp-admin/

User-agent: Googlebot-Image
Disallow:/wp-admin/

User-agent: ia_archiver
Disallow:/wp-admin/

User-agent: duggmirror
Disallow:/wp-admin/