RewriteEngine On

RewriteCond %{HTTP_USER_AGENT} ^Purebot [NC,OR]
RewriteCond %{HTTP_USER_AGENT} ^DotBot [NC,OR]
RewriteCond %{HTTP_USER_AGENT} ^Ezooms [NC,OR]
RewriteCond %{HTTP_USER_AGENT} ^Robot [NC,OR]
RewriteCond %{HTTP_USER_AGENT} ^ichiro [NC,OR]
RewriteCond %{HTTP_USER_AGENT} ^VoilaBot [NC,OR]
RewriteCond %{HTTP_USER_AGENT} ^Wget [NC,OR]
RewriteCond %{HTTP_USER_AGENT} ^ReGet [NC,OR]
RewriteCond %{HTTP_USER_AGENT} ^Rankur [NC,OR]
RewriteCond %{HTTP_USER_AGENT} ^DLE_Spider [NC,OR]
RewriteCond %{HTTP_USER_AGENT} ^cmsworldmap [NC,OR]
RewriteCond %{HTTP_USER_AGENT} ^libwww-perl [NC,OR]
RewriteCond %{HTTP_USER_AGENT} ^SurveyBot [NC,OR]
RewriteCond %{HTTP_USER_AGENT} ^RadioClicker [NC,OR]
RewriteCond %{HTTP_USER_AGENT} ^Embedly [NC,OR]
RewriteCond %{HTTP_USER_AGENT} ^TweetmemeBot [NC,OR]
RewriteCond %{HTTP_USER_AGENT} ^discobot [NC,OR]
RewriteCond %{HTTP_USER_AGENT} ^AhrefsBot [NC,OR]
RewriteCond %{HTTP_USER_AGENT} ^SearchBot [NC]
RewriteRule ^(.*)$ — [F,L]