diff --git a/WebHostLib/autolauncher.py b/WebHostLib/autolauncher.py
index 90838671200c..7254dd46e136 100644
--- a/WebHostLib/autolauncher.py
+++ b/WebHostLib/autolauncher.py
@@ -6,6 +6,7 @@
 import threading
 import time
 import typing
+from uuid import UUID
 from datetime import timedelta, datetime
 
 from pony.orm import db_session, select, commit
@@ -62,6 +63,16 @@ def autohost(config: dict):
     def keep_running():
         try:
             with Locker("autohost"):
+                # delete unowned user-content
+                with db_session:
+                    # >>> bool(uuid.UUID(int=0))
+                    # True
+                    rooms = Room.select(lambda room: room.owner == UUID(int=0)).delete(bulk=True)
+                    seeds = Seed.select(lambda seed: seed.owner == UUID(int=0) and not seed.rooms).delete(bulk=True)
+                    slots = Slot.select(lambda slot: not slot.seed).delete(bulk=True)
+                    # Command gets deleted by ponyorm Cascade Delete, as Room is Required
+                if rooms or seeds or slots:
+                    logging.info(f"{rooms} Rooms, {seeds} Seeds and {slots} Slots have been deleted.")
                 run_guardian()
                 while 1:
                     time.sleep(0.1)
@@ -191,6 +202,6 @@ def guard():
             guardian = threading.Thread(name="Guardian", target=guard)
 
 
-from .models import Room, Generation, STATE_QUEUED, STATE_STARTED, STATE_ERROR, db, Seed
+from .models import Room, Generation, STATE_QUEUED, STATE_STARTED, STATE_ERROR, db, Seed, Slot
 from .customserver import run_server_process, get_static_server_data
 from .generate import gen_game
diff --git a/WebHostLib/templates/userContent.html b/WebHostLib/templates/userContent.html
index c20d39f46d82..3603d4112d20 100644
--- a/WebHostLib/templates/userContent.html
+++ b/WebHostLib/templates/userContent.html
@@ -25,6 +25,7 @@ <h2>Your Rooms</h2>
                             <th class="center">Players</th>
                             <th>Created (UTC)</th>
                             <th>Last Activity (UTC)</th>
+                            <th>Mark for deletion</th>
                         </tr>
                     </thead>
                     <tbody>
@@ -35,6 +36,7 @@ <h2>Your Rooms</h2>
                                 <td>{{ room.seed.slots|length }}</td>
                                 <td>{{ room.creation_time.strftime("%Y-%m-%d %H:%M") }}</td>
                                 <td>{{ room.last_activity.strftime("%Y-%m-%d %H:%M") }}</td>
+                                <td><a href="{{ url_for("disown_room", room=room.id) }}">Delete next maintenance.</td>
                             </tr>
                         {% endfor %}
                     </tbody>
@@ -51,6 +53,7 @@ <h2>Your Seeds</h2>
                             <th>Seed</th>
                             <th class="center">Players</th>
                             <th>Created (UTC)</th>
+                            <th>Mark for deletion</th>
                         </tr>
                     </thead>
                     <tbody>
@@ -60,6 +63,7 @@ <h2>Your Seeds</h2>
                                 <td>{% if seed.multidata %}{{ seed.slots|length }}{% else %}1{% endif %}
                                 </td>
                                 <td>{{ seed.creation_time.strftime("%Y-%m-%d %H:%M") }}</td>
+                                <td><a href="{{ url_for("disown_seed", seed=seed.id) }}">Delete next maintenance.</td>
                             </tr>
                         {% endfor %}
                     </tbody>
diff --git a/WebHostLib/upload.py b/WebHostLib/upload.py
index af4ed264aacd..884c1913f8f9 100644
--- a/WebHostLib/upload.py
+++ b/WebHostLib/upload.py
@@ -7,7 +7,7 @@
 import zlib
 
 from io import BytesIO
-from flask import request, flash, redirect, url_for, session, render_template
+from flask import request, flash, redirect, url_for, session, render_template, abort
 from markupsafe import Markup
 from pony.orm import commit, flush, select, rollback
 from pony.orm.core import TransactionIntegrityError
@@ -219,3 +219,29 @@ def user_content():
     rooms = select(room for room in Room if room.owner == session["_id"])
     seeds = select(seed for seed in Seed if seed.owner == session["_id"])
     return render_template("userContent.html", rooms=rooms, seeds=seeds)
+
+
+@app.route("/disown_seed/<suuid:seed>", methods=["GET"])
+def disown_seed(seed):
+    seed = Seed.get(id=seed)
+    if not seed:
+        return abort(404)
+    if seed.owner !=  session["_id"]:
+        return abort(403)
+    
+    seed.owner = 0
+
+    return redirect(url_for("user_content"))
+
+
+@app.route("/disown_room/<suuid:room>", methods=["GET"])
+def disown_room(room):
+    room = Room.get(id=room)
+    if not room:
+        return abort(404)
+    if room.owner != session["_id"]:
+        return abort(403)
+
+    room.owner = 0
+
+    return redirect(url_for("user_content"))