diff --git a/inventory-app/inventory.py b/inventory-app/inventory.py
index beb6627..17d9864 100644
--- a/inventory-app/inventory.py
+++ b/inventory-app/inventory.py
@@ -1,6 +1,6 @@
 import boto3
 import pymongo
-from datetime import datetime
+from datetime import datetime, date, timedelta
 from botocore.exceptions import ClientError
 from bson.objectid import ObjectId
 from flask import Blueprint, abort, g, make_response, redirect, render_template, request
@@ -393,13 +393,15 @@ def view_inventory(slug=None):
     q = {"type": {"$ne": "token"}}
     template = "inventory.html"
     public_view = False
-    if not read_user():
+    login_user = read_user()
+    if not login_user:
         q.update({"inventory.public": True})
         template = "inventory_public.html"
         public_view = True
     else:
         fields.append(("inventory.owner.username", "Owner", str))
         fields.append(("inventory.user.username", "User", str))
+        can_audit = "k-space:janitors" in login_user["groups"]
     if slug and not public_view:
         template = "inventory_pick.html"
         if request.path.startswith("/m/inventory/clone-with-slug"):
@@ -446,7 +448,29 @@ def view_inventory_audit(item_id):
             "inventory.audit.timestamp": datetime.utcnow(),
         },
     })
-    return redirect("/m/inventory/%s/view" % item_id)
+    if request.form and request.form.get("noRedirect", False):
+        return {}
+    else:
+        return redirect("/m/inventory/%s/view" % item_id)
+
+@page_inventory.app_template_filter('audit_text')
+def render_audit_text(item):
+    timestamp = item.get('audit', {}).get('timestamp', False)
+    if timestamp:
+        return timestamp.date()
+    else:
+        return 'Never'
+
+@page_inventory.app_template_filter('audit_color')
+def render_audit_color(item):
+    timestamp = item.get('audit', {}).get('timestamp', False)
+    today = date.today()
+    if not timestamp or timestamp.date() < today - timedelta(days=365):
+        return "red"
+    elif timestamp.date() < today - timedelta(days=7):
+        return "orange"
+    else:
+        return "green unclickable"
 
 @page_inventory.route("/m/inventory/<item_id>/claim", methods=["POST"])
 @login_required
diff --git a/inventory-app/templates/base.html b/inventory-app/templates/base.html
index dbfc5a2..be27fa9 100644
--- a/inventory-app/templates/base.html
+++ b/inventory-app/templates/base.html
@@ -60,6 +60,9 @@ body {
     -webkit-box-orient: vertical;
     overflow: hidden;
 }
+.unclickable {
+    pointer-events: none;
+}
 </style>
 
   </head>
diff --git a/inventory-app/templates/inventory.html b/inventory-app/templates/inventory.html
index 1df44ad..e581e51 100644
--- a/inventory-app/templates/inventory.html
+++ b/inventory-app/templates/inventory.html
@@ -12,6 +12,9 @@
         <th>Type</th>
         <th>Owner</th>
         <th>User</th>
+        {% if can_audit %}
+          <th>Audit</th>
+        {% endif %}
       </tr>
     </thead>
     <tbody>
@@ -30,6 +33,17 @@
           <td>{{ item.type }}</td>
           <td>{{ item | owner_link}}</td>
           <td>{{ item | user_link}}</td>
+          {% if can_audit %}
+            <td>
+              <button
+                data-item-id="{{ item._id }}"
+                class="audit-button {{ item.inventory | audit_color }} waves-effect waves-light btn-small"
+              >
+                <i class="material-icons left">done</i>{{item.inventory | audit_text}}
+              </button>
+            </td>
+          {% endif %}
+
         </tr>
       {% endfor %}
     </tbody>
@@ -38,4 +52,20 @@
     <a class="waves-effect waves-light btn" href="/m/inventory/add">Add item</a>
   </p>
 </div>
+<script>
+$('button.audit-button').on('click', function() {
+  let button = $(this);
+  $.ajax({
+    method: 'POST',
+    url: "/m/inventory/" + button.data('itemId') + "/audit",
+    data: { noRedirect: true },
+    success: function() {
+      button.unbind('click');
+      button.removeClass(['orange', 'red', 'waves-effect', 'waves-light']);
+      button.addClass(['unclickable', 'green']);
+      button.text('Just now');
+    }
+  })
+});
+</script>
 {% endblock %}