User-agent: googlebot
Disallow:

User-agent: bingbot
Disallow:

User-agent: Spider.Slurp
Disallow:

User-agent: sitebot
Disallow: /

User-agent: baiduspider
Disallow: /

User-agent: MJ12bot
Disallow: /

User-agent: sistrix
Disallow: /

User-agent: 008
Disallow: /

User-agent: SearchmetricsBot
Disallow: /

User-agent: *
Disallow: /