/var/log/daemon.log taking more space how to reduce it?

Question

below are the files

-rw-r----- 1 root        adm  4.4G Mar  6 09:04 daemon.log
-rw-r----- 1 root        adm  6.2G Mar  1 06:26 daemon.log.1
-rw-r----- 1 root