Put this in your .htaccess. Notice that there's no OR in the last RewriteCond
Code:
RewriteEngine On
RewriteCond %{HTTP_USER_AGENT} ^.*eirgrabber [NC,OR]
RewriteCond %{HTTP_USER_AGENT} ^.*another_bad_bot [NC,OR]
RewriteCond %{HTTP_USER_AGENT} ^.*third_bad_bot [NC]
RewriteRule .* - [F,L]
But I wouldn't really sweat over it
