User-agent: MJ12bot
Disallow: /

User-agent: AhrefsBot 
Disallow: /

User-agent: dotbot
Disallow: /

User-agent: MegaIndex.ru
Disallow: /

User-agent: megaindex.com
Disallow: /

User-agent: SeznamBot
Disallow: /

User-agent: Qwantify
Disallow: /

# http://www.screamingfrog.co.uk/seo-spider/
User-agent: Screaming Frog SEO Spider
Disallow: /

# Block trendkite-akashic-crawler
User-agent: trendkite-akashic-crawler
Disallow: /