diff --git a/src/app/Console/Commands/DB/ExpungeCommand.php b/src/app/Console/Commands/DB/ExpungeCommand.php
new file mode 100644
--- /dev/null
+++ b/src/app/Console/Commands/DB/ExpungeCommand.php
@@ -0,0 +1,49 @@
+<?php
+
+namespace App\Console\Commands\DB;
+
+use Carbon\Carbon;
+use Illuminate\Console\Command;
+use Illuminate\Support\Facades\DB;
+
+class ExpungeCommand extends Command
+{
+    /**
+     * The name and signature of the console command.
+     *
+     * @var string
+     */
+    protected $signature = 'db:expunge';
+
+    /**
+     * The console command description.
+     *
+     * @var string
+     */
+    protected $description = 'Expunge old records from the database tables';
+
+    /**
+     * Execute the console command.
+     *
+     * @return mixed
+     */
+    public function handle()
+    {
+        \App\Policy\Greylist\Connect::where('updated_at', '<', Carbon::now()->subMonthsWithoutOverflow(6))
+            ->delete();
+
+        \App\Policy\Greylist\Whitelist::where('updated_at', '<', Carbon::now()->subMonthsWithoutOverflow(6))
+            ->delete();
+
+        \App\Policy\RateLimit::where('updated_at', '<', Carbon::now()->subMonthsWithoutOverflow(6))
+            ->delete();
+
+        \App\SignupCode::where('created_at', '<', Carbon::now()->subMonthsWithoutOverflow(6))
+            ->forceDelete();
+
+        DB::table('failed_jobs')->where('failed_at', '<', Carbon::now()->subMonthsWithoutOverflow(6))
+            ->delete();
+
+        // TODO: What else? Should we force-delete deleted "dummy/spammer" accounts?
+    }
+}
diff --git a/src/app/Console/Kernel.php b/src/app/Console/Kernel.php
--- a/src/app/Console/Kernel.php
+++ b/src/app/Console/Kernel.php
@@ -40,6 +40,9 @@
 
         // This removes passport expired/revoked tokens and auth codes from the database
         $schedule->command('passport:purge')->dailyAt('06:30');
+
+        // Keep the database size under control (every Monday)
+        $schedule->command('db:expunge')->weeklyOn(1, '04:00');
     }
 
     /**
diff --git a/src/tests/Feature/Console/DB/ExpungeTest.php b/src/tests/Feature/Console/DB/ExpungeTest.php
new file mode 100644
--- /dev/null
+++ b/src/tests/Feature/Console/DB/ExpungeTest.php
@@ -0,0 +1,19 @@
+<?php
+
+namespace Tests\Feature\Console\DB;
+
+use Tests\TestCase;
+
+class ExpungeTest extends TestCase
+{
+    /**
+     * Test command runs
+     */
+    public function testHandle(): void
+    {
+        $code = \Artisan::call("db:expunge");
+        $output = trim(\Artisan::output());
+
+        $this->assertSame(0, $code);
+    }
+}