User-agent: *
Disallow: /author/
Disallow: /category/
Dissalow /wp-admin/
Disallow wp-login.php

User-agent: rogerbot
Disallow: /

User-agent: SemrushBot
Disallow: /

User-agent: xenu 
Disallow: /

User-agent: MJ12bot
Disallow: /

User-agent: AhrefsBot
Disallow: /

User-agent: PetalBot
 Disallow: /

User-agent: AmazonBot 
 Disallow: /

User-agent: Googlebot 
 Disallow: /