User-agent: *
Disallow: /
User-agent: Googlebot
Disallow:
User-agent: Mediapartners-Google
Disallow: /

User-agent: Seznambot
Disallow:

User-agent: Slurp
Disallow: /

User-agent: bingbot
Disallow: 
User-agent: AhrefsBot
Disallow: /

User-agent: *
Disallow: /*blackhole
Disallow: /?blackhole