User-agent: *
Disallow: /my/
Crawl-delay: 3

User-Agent: Yandex
Allow: /
Disallow: /my/
Crawl-delay: 3
Host: itchem.com

User-agent: msnbot
Crawl-delay: 10

User-agent: MJ12bot
Crawl-delay: 20

User-agent: AhrefsBot
Disallow: /