User-agent: Twiceler
Disallow: /

User-agent: psbot
Disallow: /

User-agent: LC-Crawler
Disallow: /

User-agent: baiduspider
Disallow: /

User-agent: BaiduMobaider
Disallow: /

User-agent: Sogou web spider
Disallow: /

User-agent: Sogou web spider/4
Disallow: /

User-agent: Yeti/1.0
Disallow: /