User-agent: MJ12bot
Disallow: /
#Baiduspider
User-agent: Baiduspider
Disallow: /
#Yandex
User-agent: Yandex
Disallow: /
#Adding a crawl delay for Semrushbot 8th April 2018 due to massive use of server.
User-agent: SemrushBot
Crawl-delay:10