Hello, to stop bad bot, I added to htaccess # BLOCK USER AGENTS RewriteEngine on RewriteCond %{HTTP_USER_AGENT} Mozilla/5\.0\ \(Windows\ NT\ 6\.1;\ WOW64;\ rv\:40\.0\)\ Gecko/20100101\ Firefox/40\.1 [NC] RewriteRule !^robots\.txt$ - [F] # BLOCK BLANK USER AGENTS RewriteCond %{HTTP_USER_AGENT} ^-?$ RewriteRule ^ - [F] Can anybody explain, how it works? Do it redirect bot to robots.txt? Thanks for answer