User-agent: SemrushBot
Disallow: /

User-agent: AhrefsBot
Disallow: /

User-agent: Sidetrade indexer bot
Disallow: /

User-agent: PetalBot
Disallow: /

User-agent: MJ12bot
Disallow: /

# All other robots allowed
User-agent: *
Allow: /

# Sitemap files
Sitemap: https://www.ecfr.us/sitemap.xml