User-agent: *
Disallow:

User-agent: Xenu Link Sleuth
Disallow: /

User-agent: libwww-perl*
Disallow: /

User-agent: Baiduspider+
Disallow: /

User-agent: libwww-perl/5.79
Disallow: /

User-agent: Exabot/3.0
Disallow: /