diff --git a/miyagi-backup.sh b/miyagi-backup.sh
index aaf400f..1e05c29 100644
--- a/miyagi-backup.sh
+++ b/miyagi-backup.sh
@@ -47,6 +47,13 @@ if [[ -n "${CONFIG_FILE:-}" ]]; then
   : "${CHECKZFS_SPOOL:=1}"
   : "${CHECKZFS_SPOOL_MAXAGE:=90000}"
 
+  : "${SPOOL_DIR:=/var/lib/check_mk_agent/spool}"
+  : "${SPOOL_PREFIX_PBS:=120000}"
+  : "${SPOOL_PREFIX_PIGGYBACK:=100000}"
+  : "${SPOOL_PREFIX_PIGGYBACK_EXTERNAL:=100000}"
+  : "${SPOOL_PREFIX_CHECKZFS_EXTERNAL:=120000}"
+  : "${SPOOL_CLEANUP_DAYS:=7}"
+
   REQUIRED_VARS=(
     SOURCEPORT BACKUPSERVER ZSYNC MAINTDAY SHUTDOWN UPDATES
     SOURCEHOST ZFSROOT ZFSSECOND ZFSTRGT ZPUSHTAG ZPUSHMINKEEP ZPUSHKEEP ZPUSHLABEL
@@ -278,7 +285,7 @@ run_remote_updates() {
 send_piggyback() {
   get_sourcehostname
   local combined_host="miyagi-${SOURCEHOSTNAME}-$(hostname)"
-  local filename="90000_${combined_host}"
+  local filename="${SPOOL_PREFIX_PIGGYBACK}_${combined_host}"
 
   log "Reminder: Add a host named ${combined_host} in CMK (without Agent, Piggyback enabled)!"
   log "Creating piggyback file: $filename"
@@ -289,8 +296,10 @@ send_piggyback() {
     echo "<<<<>>>>"
   } > "$filename"
 
-  if rscp "$filename" "$SOURCEHOST:/var/lib/check_mk_agent/spool/"; then
+  if rscp "$filename" "$SOURCEHOST:${SPOOL_DIR}/"; then
     log "Piggyback data successfully sent to $SOURCEHOST"
+    rssh root@"$SOURCEHOST" "find '${SPOOL_DIR}' -maxdepth 1 -name '*_${combined_host}' -not -name '$(basename "$filename")' -mtime +${SPOOL_CLEANUP_DAYS} -delete" \
+      || log "WARNUNG: Aufräumen alter Piggyback-Spool-Dateien auf $SOURCEHOST fehlgeschlagen"
   else
     log "ERROR: Failed to send piggyback data to $SOURCEHOST"
   fi
@@ -439,16 +448,21 @@ run_pbs_backup() {
     echo "2 DailyPBS - Daily Backup FEHLGESCHLAGEN" > /tmp/cmk_tmp.out
   fi
 
+  local pbs_spool_file="${SPOOL_PREFIX_PBS}_checkpbs"
+
   {
     echo "<<<local>>>"
     cat /tmp/cmk_tmp.out
-  } > /tmp/90000_checkpbs
+  } > "/tmp/${pbs_spool_file}"
 
-  rscp /tmp/90000_checkpbs \
-    root@"$SOURCEHOST":/var/lib/check_mk_agent/spool \
-    || log "Fehler beim Übertragen des Monitoring-Outputs via SCP"
+  if rscp "/tmp/${pbs_spool_file}" root@"$SOURCEHOST":"${SPOOL_DIR}"; then
+    rssh root@"$SOURCEHOST" "find '${SPOOL_DIR}' -maxdepth 1 -name '*_checkpbs' -not -name '${pbs_spool_file}' -mtime +${SPOOL_CLEANUP_DAYS} -delete" \
+      || log "WARNUNG: Aufräumen alter PBS-Spool-Dateien auf $SOURCEHOST fehlgeschlagen"
+  else
+    log "Fehler beim Übertragen des Monitoring-Outputs via SCP"
+  fi
 
-  rm -f /tmp/cmk_tmp.out /tmp/90000_checkpbs
+  rm -f /tmp/cmk_tmp.out "/tmp/${pbs_spool_file}"
 
   #write_pbs_status
 
@@ -504,7 +518,7 @@ run_scrub_stop() {
 }
 
 write_pbs_status() {
-  local spool_file="/var/lib/check_mk_agent/spool/90000_checkpbs_local"
+  local spool_file="${SPOOL_DIR}/${SPOOL_PREFIX_PBS}_checkpbs_local"
   local repo="$BACKUPSTOREPBS"
   local tmpfile
   tmpfile=$(mktemp)
@@ -613,7 +627,7 @@ send_piggyback_external() {
     log "Ermittelter SOURCEHOSTNAME: $SOURCEHOSTNAME"
 
     local combined_host="miyagi-${SOURCEHOSTNAME}-$(hostname)"
-    local spool_file="90000_${combined_host}_external"
+    local spool_file="${SPOOL_PREFIX_PIGGYBACK_EXTERNAL}_${combined_host}_external"
     local temp_dir
     temp_dir=$(mktemp -d)
 
@@ -625,8 +639,10 @@ send_piggyback_external() {
         echo "<<<<>>>>"
     } > "$temp_dir/$spool_file"
 
-    if scp -P "$EPIGGYBACK_PORT" "$temp_dir/$spool_file" "$EPIGGYBACK_HOST:/var/lib/check_mk_agent/spool/"; then
+    if scp -P "$EPIGGYBACK_PORT" "$temp_dir/$spool_file" "$EPIGGYBACK_HOST:${SPOOL_DIR}/"; then
         log "Piggyback-Daten erfolgreich an $EPIGGYBACK_HOST gesendet: $spool_file"
+        ssh -p "$EPIGGYBACK_PORT" "$EPIGGYBACK_HOST" "find '${SPOOL_DIR}' -maxdepth 1 -name '*_${combined_host}_external' -not -name '${spool_file}' -mtime +${SPOOL_CLEANUP_DAYS} -delete" \
+            || log "WARNUNG: Aufräumen alter Piggyback-Spool-Dateien auf $EPIGGYBACK_HOST fehlgeschlagen"
     else
         log "Fehler beim Übertragen der Piggyback-Daten an $EPIGGYBACK_HOST"
         rm -rf "$temp_dir"
@@ -678,7 +694,7 @@ send_checkzfs_external() {
 
     local combined="miyagi-${SOURCEHOSTNAME}-$(hostname)-${ZPUSHTAG}"
     local spoolfile="/tmp/${combined}_checkzfs_external"
-    local spooldest="120000_${combined}_checkzfs_external"
+    local spooldest="${SPOOL_PREFIX_CHECKZFS_EXTERNAL}_${combined}_checkzfs_external"
 
     log "Führe checkzfs aus..."
     {
@@ -693,8 +709,10 @@ send_checkzfs_external() {
             --output checkmk
     } > "$spoolfile"
 
-    if scp -P "$ECHECKZFS_PORT" "$spoolfile" root@"$ECHECKZFS_HOST":/var/lib/check_mk_agent/spool/"$spooldest"; then
+    if scp -P "$ECHECKZFS_PORT" "$spoolfile" root@"$ECHECKZFS_HOST":"${SPOOL_DIR}/${spooldest}"; then
         log "Spool-Datei erfolgreich übertragen an $ECHECKZFS_HOST:$spooldest"
+        ssh -p "$ECHECKZFS_PORT" root@"$ECHECKZFS_HOST" "find '${SPOOL_DIR}' -maxdepth 1 -name 'miyagi-${SOURCEHOSTNAME}-$(hostname)-*_checkzfs_external' -not -name '${spooldest}' -mtime +${SPOOL_CLEANUP_DAYS} -delete" \
+            || log "WARNUNG: Aufräumen alter checkzfs-Spool-Dateien auf $ECHECKZFS_HOST fehlgeschlagen"
     else
         log "Fehler beim Übertragen der Spool-Datei an $ECHECKZFS_HOST"
     fi