Apache logs are full of Alkaline's requests, can I avoid logging these?

Apache supports two directives, SetEnvIf (mod_setenvif: http://httpd.apache.org/docs/mod/mod_setenvif.html#SetEnvIf ) and CustomLog (mod_log: http://www.apache.org/docs/mod/mod_log_config.html#customlog ).

This allows to filter the Alkaline's User-Agent into a different log file and remove Alkaline logs from the general log. For example:

SetEnvIf User-Agent "AlkalineBOT/.*" is-alkaline CustomLog alkaline-requests.log common env=is-alkaline CustomLog access_log common env=!is-alkaline