Shell script to delete files and folders older than x days

This script finds, logs and deletes files and folders older than x days.
#/bin/bash

DIRS="/dir1/,/path/to/dir2/,/dir3/"

LOG_FILE="path to log file"

TIMESTAMP=date +%Y:%m:%d

DAYS_OLD="10" # This will find and delete folders and files older than 10 days.

IFS=$','

echo "....................................." >> $LOG_FILE

echo "Starting Deletion job on : $TIMESTAMP" >> $LOG_FILE

for DIR in $DIRS

do

echo "Looking for Files in $DIR" >> $LOG_FILE

find $DIR -type f -mtime $DAYS_OLD >> $LOG_FILE

find $DIR -type f -mtime $DAYS_OLD -exec rm -f {} ;

echo "Deleted found files" >> $LOG_FILE

echo "Now Looking for Empty Folders Older than $DAYS_OLD Days"

find $DIR -type d -empty -mtime +$DAYS_OLD >> $LOG_FILE

find $DIR -type d -empty -mtime +$DAYS_OLD -exec rm -rf {} ;

done
unset IFS
echo "Cleanup on $NOW completed" >> $LOG_FILE

echo "..........................................................">>$LOG_FILE