User-agent: Mediapartners-Google
Disallow:
Crawl-delay: 20 

User-agent: Googlebot
Disallow:
Crawl-delay: 20 

User-agent: Adsbot-Google
Disallow:
Crawl-delay: 20

User-agent: Googlebot-Image
Disallow:
Crawl-delay: 20

User-agent: Googlebot-Mobile
Disallow:
Crawl-delay: 20

User-agent: MSNBot
Disallow:
Crawl-delay: 20

User-agent: bingbot
Disallow:
Crawl-delay: 20

User-agent: Slurp
Disallow:
Crawl-delay: 20

User-agent: Yahoo! Slurp
Disallow:
Crawl-delay: 20

User-agent: FunnelBack
Disallow:
Crawl-delay: 20

# Block all other spiders
User-agent: *
Disallow: /

# Block Directories for all spiders
User-agent: *
Disallow: /ads/
Disallow: /cgi-bin/
Disallow: /scripts/
Disallow: /pointsolution/
Disallow: /usmexnet/
Disallow: /rm
Disallow: /error_messages
Disallow: /assets
Disallow: /tools/mytools/files