User-agent: psbot
Disallow: /

User-agent: robot
Disallow: /

User-agent: bot/
Disallow: /

User-agent: bot-
Disallow: /

User-agent: Voila
Disallow: /

User-agent: robots.txt
Disallow: /

User-agent: Gaisbot
Disallow: /

User-agent: Gigabot
Disallow: /

User-agent: Iwp-trivial
Disallow: /