diff --git a/app/jobs/collection/clean_inaccessible_data_job.rb b/app/jobs/collection/clean_inaccessible_data_job.rb
new file mode 100644
index 000000000..16ff1b90f
--- /dev/null
+++ b/app/jobs/collection/clean_inaccessible_data_job.rb
@@ -0,0 +1,5 @@
+class Collection::CleanInaccessibleDataJob < ApplicationJob
+  def perform(user, collection)
+    collection.clean_inaccessible_data_for(user)
+  end
+end
diff --git a/app/jobs/collection/clean_inaccessible_notifications_job.rb b/app/jobs/collection/clean_inaccessible_notifications_job.rb
deleted file mode 100644
index e332e46ab..000000000
--- a/app/jobs/collection/clean_inaccessible_notifications_job.rb
+++ /dev/null
@@ -1,5 +0,0 @@
-class Collection::CleanInaccessibleNotificationsJob < ApplicationJob
-  def perform(user, collection)
-    collection.clean_inaccessible_notifications_for(user)
-  end
-end
diff --git a/app/models/access.rb b/app/models/access.rb
index 214e021f2..88303bd15 100644
--- a/app/models/access.rb
+++ b/app/models/access.rb
@@ -6,7 +6,7 @@ class Access < ApplicationRecord
 
   scope :ordered_by_recently_accessed, -> { order(accessed_at: :desc) }
 
-  after_destroy_commit :clean_inaccessible_notifications_later
+  after_destroy_commit :clean_inaccessible_data_later
 
   def accessed
     touch :accessed_at unless recently_accessed?
@@ -17,7 +17,7 @@ class Access < ApplicationRecord
       accessed_at&.> 5.minutes.ago
     end
 
-    def clean_inaccessible_notifications_later
-      Collection::CleanInaccessibleNotificationsJob.perform_later(user, collection)
+    def clean_inaccessible_data_later
+      Collection::CleanInaccessibleDataJob.perform_later(user, collection)
     end
 end
diff --git a/app/models/collection/accessible.rb b/app/models/collection/accessible.rb
index 40c4a7c2d..264d03af8 100644
--- a/app/models/collection/accessible.rb
+++ b/app/models/collection/accessible.rb
@@ -40,18 +40,23 @@ module Collection::Accessible
     access_for(user).present?
   end
 
-  def clean_inaccessible_notifications_for(user)
+  def clean_inaccessible_data_for(user)
     return if accessible_to?(user)
 
-    user.notifications.find_each do |notification|
-      if notification.card&.collection == self
-        notification.destroy
-      end
-    end
+    clean_inaccessible_records user.notifications
+    clean_inaccessible_records user.mentions
   end
 
   private
     def grant_access_to_everyone
       accesses.grant_to(User.all) if all_access_previously_changed?(to: true)
     end
+
+    def clean_inaccessible_records(records)
+      records.find_each do |record|
+        if record.card&.collection == self
+          record.destroy
+        end
+      end
+    end
 end
diff --git a/test/models/access_test.rb b/test/models/access_test.rb
index 6cbdc1ed5..1bd1af0ae 100644
--- a/test/models/access_test.rb
+++ b/test/models/access_test.rb
@@ -28,7 +28,7 @@ class AccessTest < ActiveSupport::TestCase
 
     kevin_access = accesses(:writebook_kevin)
 
-    perform_enqueued_jobs only: Collection::CleanInaccessibleNotificationsJob do
+    perform_enqueued_jobs only: Collection::CleanInaccessibleDataJob do
       kevin_access.destroy
     end
 
@@ -38,4 +38,28 @@ class AccessTest < ActiveSupport::TestCase
 
     assert_empty remaining_notifications
   end
+
+  test "mentions are destroyed when access is lost" do
+    david = users(:david)
+    collection = collections(:writebook)
+
+    assert david.mentions.count > 0
+
+    mentions_to_be_destroyed = david.mentions.select do |mention|
+      mention.card&.collection == collection
+    end
+    assert mentions_to_be_destroyed.any?
+
+    david_access = accesses(:writebook_david)
+
+    perform_enqueued_jobs only: Collection::CleanInaccessibleDataJob do
+      david_access.destroy
+    end
+
+    remaining_mentions = david.mentions.reload.select do |mention|
+      mention.card&.collection == collection
+    end
+
+    assert_empty remaining_mentions
+  end
 end