User-agent: BLEXBot
Disallow: /

User-agent: Riddler
Disallow: /

User-agent: SemrushBot
Disallow: /

User-agent: BUbiNG
Disallow: /

User-agent: YandexBot
Disallow: /

User-agent: dotbot
Disallow: /

user-agent: AhrefsBot
disallow: /

User-agent: msnbot
Disallow: /

User-agent: MJ12bot
Disallow: / 

User-agent: Amazonbot
Disallow: /