User-agent: MJ12bot
Disallow: /
User-agent: twiceler
Disallow: /
User-agent: Gigabot
Disallow: /
User-agent: baiduspider
Disallow: /
User-agent: naverbot
Disallow: /
User-agent: yeti
Disallow: /
User-agent: Exabot
Disallow: /
User-agent: Yandex
Disallow: /
User-agent: voyager
Disallow: /
User-agent: 008
Disallow: /
User-agent: discobot
Disallow: / 
User-agent: spbot
Disallow: /