Why output of pstree command contains garbled or strange characters ?

Issue

• Why output of pstree command contains garbled or strange characters ?

[root@example ~]# pstree 1
initââ¬âabrt-dump-oops
     ââabrtd
     ââatd
     ââcrond
     ââdbus-daemon
     ââdhclient
     ââhaldâââhald-runnerââ¬âhald-addon-acpi
     â                    ââhald-addon-inpu
     ââmasterââ¬âpickup
     â        ââqmgr
     ââ6*[mingetty]
     âântpd
     âârhnsd
     âârhsmcertdââârhsmcertd
     âârsyslogdâââ2*[{rsyslogd}]
     ââsshdâââsshdâââbashâââpstree
     ââudevdâââ2*[udevd]
     ââvmtoolsd

• Unable to read output of pstree command as it does not displayed cleanly on screen.