User-agent: *
Disallow: /boo/

User-agent: AhrefsBot
Crawl-delay: 2

User-agent: SemrushBot
Crawl-delay: 2

User-agent: Barkrowler
Crawl-delay: 2

User-agent: MJ12bot
Crawl-delay: 2

User-agent: DotBot
Crawl-delay: 2

User-agent: SERankingBacklinksBot
Crawl-delay: 2

User-agent: ShapBot
Crawl-delay: 2

User-agent: PetalBot
Disallow: /

User-agent: Sogou web spider
Disallow: /

User-agent: YandexBot
Disallow: /

User-agent: SeznamBot
Disallow: /

User-agent: Baiduspider
Disallow: /