diff --git a/plugin.yml b/plugin.yml
index 5e18afe9..d7087f84 100644
--- a/plugin.yml
+++ b/plugin.yml
@@ -18,6 +18,7 @@ permissions:
   massivecore.store.stats: {description: show mstore statistics, default: false}
   massivecore.store.listcolls: {description: list collections in a database, default: false}
   massivecore.store.copydb: {description: copy database content, default: false}
+  massivecore.store.playerclean: {description: clean inactive players, default: false}
   massivecore.usys: {description: use the usys command, default: false}
   massivecore.usys.multiverse: {description: manage multiverses, default: false}
   massivecore.usys.multiverse.list: {description: list multiverses, default: false}
@@ -62,6 +63,7 @@ permissions:
       massivecore.store.stats: true
       massivecore.store.listcolls: true
       massivecore.store.copydb: true
+      massivecore.store.playerclean: true
       massivecore.usys: true
       massivecore.usys.multiverse: true
       massivecore.usys.multiverse.list: true
@@ -101,6 +103,7 @@ permissions:
   massivecore.kit.rank3:
     default: false
     children:
+      massivecore.store.playerclean: true
       massivecore.kit.rank2: true
   massivecore.kit.rank2:
     default: false
diff --git a/src/com/massivecraft/massivecore/MassiveCoreMConf.java b/src/com/massivecraft/massivecore/MassiveCoreMConf.java
index 523baef3..be24bd33 100644
--- a/src/com/massivecraft/massivecore/MassiveCoreMConf.java
+++ b/src/com/massivecraft/massivecore/MassiveCoreMConf.java
@@ -127,6 +127,27 @@ public class MassiveCoreMConf extends Entity<MassiveCoreMConf>
 	@EditorType(TypeBooleanOn.class)
 	public boolean warnOnLocalAlter = false;
 	
+	// -------------------------------------------- //
+	// PLAYERCLEAN
+	// -------------------------------------------- //
+	
+	// How often should the task run?
+	// When set to 0 this feature is disabled. Meaning no cleaning will be done.
+	// Default: 1 day (Per default once a day.)
+	public long playercleanPeriodMillis = TimeUnit.MILLIS_PER_DAY;
+	
+	// This is used to decide at what time of the day the task will run.
+	// For Example: If the taskPeriodMillis is 24 hours:
+	// Set it to 0 for UTC midnight.
+	// Set it to 3600000 for UTC midnight + 1 hour.
+	public long playercleanOffsetMillis = 0;
+	
+	// When did the task last run?
+	// This need not be modified by the server owner.
+	// It will be set for you automatically.
+	// 0 means it never ran before.
+	public long playercleanLastMillis = 0;
+	
 	// -------------------------------------------- //
 	// MONGODB
 	// -------------------------------------------- //
diff --git a/src/com/massivecraft/massivecore/MassiveCorePerm.java b/src/com/massivecraft/massivecore/MassiveCorePerm.java
index 95fe23b1..80310634 100644
--- a/src/com/massivecraft/massivecore/MassiveCorePerm.java
+++ b/src/com/massivecraft/massivecore/MassiveCorePerm.java
@@ -18,6 +18,7 @@ public enum MassiveCorePerm implements Identified
 	STORE_STATS,
 	STORE_LISTCOLLS,
 	STORE_COPYDB,
+	STORE_PLAYERCLEAN,
 	USYS,
 	USYS_MULTIVERSE,
 	USYS_MULTIVERSE_LIST,
diff --git a/src/com/massivecraft/massivecore/cmd/CmdMassiveCoreStore.java b/src/com/massivecraft/massivecore/cmd/CmdMassiveCoreStore.java
index d3276d4e..f4c0a7a3 100755
--- a/src/com/massivecraft/massivecore/cmd/CmdMassiveCoreStore.java
+++ b/src/com/massivecraft/massivecore/cmd/CmdMassiveCoreStore.java
@@ -20,5 +20,6 @@ public class CmdMassiveCoreStore extends MassiveCoreCommand
 	public CmdMassiveCoreStoreStats cmdMassiveCoreStoreStats = new CmdMassiveCoreStoreStats();
 	public CmdMassiveCoreStoreListcolls cmdMassiveCoreStoreListcolls = new CmdMassiveCoreStoreListcolls();
 	public CmdMassiveCoreStoreCopydb cmdMassiveCoreStoreCopydb = new CmdMassiveCoreStoreCopydb();
+	public CmdMassiveCoreStorePlayerclean cmdMassiveCoreStorePlayerclean = new CmdMassiveCoreStorePlayerclean();
 	
 }
diff --git a/src/com/massivecraft/massivecore/cmd/CmdMassiveCoreStorePlayerclean.java b/src/com/massivecraft/massivecore/cmd/CmdMassiveCoreStorePlayerclean.java
new file mode 100755
index 00000000..480aacd9
--- /dev/null
+++ b/src/com/massivecraft/massivecore/cmd/CmdMassiveCoreStorePlayerclean.java
@@ -0,0 +1,43 @@
+package com.massivecraft.massivecore.cmd;
+
+import com.massivecraft.massivecore.MassiveException;
+import com.massivecraft.massivecore.command.type.container.TypeSet;
+import com.massivecraft.massivecore.command.type.store.TypeSenderColl;
+import com.massivecraft.massivecore.store.SenderColl;
+import com.massivecraft.massivecore.store.inactive.InactiveUtil;
+import com.massivecraft.massivecore.util.IdUtil;
+import com.massivecraft.massivecore.util.MUtil;
+import org.bukkit.command.CommandSender;
+
+import java.util.Set;
+
+public class CmdMassiveCoreStorePlayerclean extends MassiveCoreCommand
+{
+	// -------------------------------------------- //
+	// CONSTRUCT
+	// -------------------------------------------- //
+	
+	public CmdMassiveCoreStorePlayerclean()
+	{
+		// Parameters
+		this.addParameter(TypeSet.get(TypeSenderColl.get()), "player coll", true).setDesc("the coll to clean inactive players from");
+	}
+	
+	// -------------------------------------------- //
+	// OVERRIDE
+	// -------------------------------------------- //
+	
+	@Override
+	public void perform() throws MassiveException
+	{
+		Set<SenderColl<?>> colls = this.readArg();
+		
+		Set<CommandSender> receivers = MUtil.set(sender, IdUtil.getConsole());
+		
+		for (SenderColl<?> coll : colls)
+		{
+			InactiveUtil.considerRemoveInactive(coll, receivers);
+		}
+	}
+	
+}
diff --git a/src/com/massivecraft/massivecore/command/type/store/TypeSenderColl.java b/src/com/massivecraft/massivecore/command/type/store/TypeSenderColl.java
new file mode 100644
index 00000000..a8719b7c
--- /dev/null
+++ b/src/com/massivecraft/massivecore/command/type/store/TypeSenderColl.java
@@ -0,0 +1,29 @@
+package com.massivecraft.massivecore.command.type.store;
+
+import com.massivecraft.massivecore.command.type.TypeAbstractChoice;
+import com.massivecraft.massivecore.store.Coll;
+import com.massivecraft.massivecore.store.SenderColl;
+
+import java.util.Collection;
+
+public class TypeSenderColl extends TypeAbstractChoice<SenderColl<?>>
+{
+	// -------------------------------------------- //
+	// INSTANCE & CONSTRUCT
+	// -------------------------------------------- //
+	
+	private static TypeSenderColl i = new TypeSenderColl();
+	public static TypeSenderColl get() { return i; }
+	public TypeSenderColl() { super(Coll.class); }
+	
+	// -------------------------------------------- //
+	// OVERRIDE
+	// -------------------------------------------- //
+
+	@Override
+	public Collection<SenderColl<?>> getAll()
+	{
+		return SenderColl.getSenderInstances();
+	}
+	
+}
diff --git a/src/com/massivecraft/massivecore/engine/EngineMassiveCorePlayerclean.java b/src/com/massivecraft/massivecore/engine/EngineMassiveCorePlayerclean.java
new file mode 100644
index 00000000..69154afd
--- /dev/null
+++ b/src/com/massivecraft/massivecore/engine/EngineMassiveCorePlayerclean.java
@@ -0,0 +1,93 @@
+package com.massivecraft.massivecore.engine;
+
+import com.massivecraft.massivecore.Engine;
+import com.massivecraft.massivecore.MassiveCore;
+import com.massivecraft.massivecore.MassiveCoreMConf;
+import com.massivecraft.massivecore.event.EventMassiveCorePlayercleanToleranceMillis;
+import com.massivecraft.massivecore.store.SenderColl;
+import com.massivecraft.massivecore.store.inactive.InactiveUtil;
+import com.massivecraft.massivecore.util.IdUtil;
+import org.bukkit.command.CommandSender;
+import org.bukkit.event.EventHandler;
+import org.bukkit.event.EventPriority;
+
+import java.util.Collections;
+import java.util.List;
+
+public class EngineMassiveCorePlayerclean extends Engine
+{
+	// -------------------------------------------- //
+	// INSTANCE & CONSTRUCT
+	// -------------------------------------------- //
+	
+	private static EngineMassiveCorePlayerclean i = new EngineMassiveCorePlayerclean();
+	public static EngineMassiveCorePlayerclean get() { return i; }
+	public EngineMassiveCorePlayerclean()
+	{
+		// Just check once a minute
+		this.setPeriod(60L * 20L);
+	}
+	
+	// -------------------------------------------- //
+	// OVERRIDE: RUNNABLE
+	// -------------------------------------------- //
+	
+	@Override
+	public void run()
+	{
+		final long now = System.currentTimeMillis();
+		
+		// If this is the right server ...
+		if ( ! MassiveCore.isTaskServer()) return;
+		
+		// ... and the current invocation ...
+		final long currentInvocation = getInvocationFromMillis(now);
+		
+		// ... and the last invocation ...
+		final long lastInvocation = getInvocationFromMillis(MassiveCoreMConf.get().playercleanLastMillis);
+		
+		// ... are different ...
+		if (currentInvocation == lastInvocation) return;
+		
+		// ... then it's time to invoke.
+		invoke(now);
+	}
+	
+	public void invoke(long now)
+	{
+		// Update lastMillis
+		MassiveCoreMConf.get().playercleanLastMillis = now;
+		MassiveCoreMConf.get().changed();
+		
+		List<CommandSender> recipients = Collections.<CommandSender>singletonList(IdUtil.getConsole());
+		for (SenderColl<?> coll : SenderColl.getSenderInstances())
+		{
+			if (!coll.isPlayercleanTaskEnabled()) continue;
+			InactiveUtil.considerRemoveInactive(now, coll, recipients);
+		}
+	}
+	
+	// -------------------------------------------- //
+	// TASK MILLIS AND INVOCATION
+	// -------------------------------------------- //
+	// The invocation is the amount of periods from UNIX time to now.
+	// It will increment by one when a period has passed.
+	
+	// Remember to check isDisabled first!
+	// Here we accept millis from inside the period by rounding down.
+	private static long getInvocationFromMillis(long millis)
+	{
+		return (millis - MassiveCoreMConf.get().playercleanOffsetMillis) / MassiveCoreMConf.get().playercleanPeriodMillis;
+	}
+
+	// -------------------------------------------- //
+	// DEFAULT
+	// -------------------------------------------- //
+	
+	@EventHandler(priority =  EventPriority.LOWEST, ignoreCancelled = true)
+	public void defaultMillis(EventMassiveCorePlayercleanToleranceMillis event)
+	{
+		event.getToleranceCauseMillis().put("Default", event.getColl().getPlayercleanToleranceMillis());
+	}
+	
+}
diff --git a/src/com/massivecraft/massivecore/event/EventMassiveCorePlayercleanToleranceMillis.java b/src/com/massivecraft/massivecore/event/EventMassiveCorePlayercleanToleranceMillis.java
new file mode 100644
index 00000000..33571839
--- /dev/null
+++ b/src/com/massivecraft/massivecore/event/EventMassiveCorePlayercleanToleranceMillis.java
@@ -0,0 +1,79 @@
+package com.massivecraft.massivecore.event;
+
+import com.massivecraft.massivecore.store.SenderColl;
+import com.massivecraft.massivecore.store.SenderEntity;
+import com.massivecraft.massivecore.store.inactive.Inactive;
+import org.bukkit.event.HandlerList;
+
+import java.util.LinkedHashMap;
+import java.util.Map;
+
+public class EventMassiveCorePlayercleanToleranceMillis extends EventMassiveCore
+{
+	// -------------------------------------------- //
+	// REQUIRED EVENT CODE
+	// -------------------------------------------- //
+	
+	private static final HandlerList handlers = new HandlerList();
+	@Override public HandlerList getHandlers() { return handlers; }
+	public static HandlerList getHandlerList() { return handlers; }
+	
+	// -------------------------------------------- //
+	// FIELD
+	// -------------------------------------------- //
+	
+	private final long now;
+	public long getNow() { return now; }
+	
+	private final SenderEntity<?> entity;
+	public SenderEntity<?> getEntity() { return this.entity; }
+	
+	public SenderColl<?> getColl() { return entity.getColl(); }
+	
+	private final Map<String, Long> toleranceCauseMillis = new LinkedHashMap<>();
+	public Map<String, Long> getToleranceCauseMillis() { return this.toleranceCauseMillis; }
+	
+	// -------------------------------------------- //
+	// CONSTRUCT
+	// -------------------------------------------- //
+	
+	public EventMassiveCorePlayercleanToleranceMillis(SenderEntity entity)
+	{
+		this(System.currentTimeMillis(), entity);
+	}
+	
+	public EventMassiveCorePlayercleanToleranceMillis(long now, SenderEntity entity)
+	{
+		this.now = now;
+		this.entity = entity;
+	}
+	
+	// -------------------------------------------- //
+	// CONVENIENCE
+	// -------------------------------------------- //
+	
+	public long getToleranceMillis()
+	{
+		long ret = 0;
+		
+		for (Long value : toleranceCauseMillis.values())
+		{
+			ret += value;
+		}
+		
+		return ret;
+	}
+	
+	public boolean shouldBeRemoved()
+	{
+		long toleranceMillis = getToleranceMillis();
+		
+		long now = this.getNow();
+		long lastActivityMillis = ((Inactive)this.getEntity()).getLastActivityMillis();
+		
+		long removeTime = lastActivityMillis + toleranceMillis;
+		
+		return now >= removeTime;
+	}
+	
+}
diff --git a/src/com/massivecraft/massivecore/store/SenderColl.java b/src/com/massivecraft/massivecore/store/SenderColl.java
index e0ccf9d2..f28029a3 100644
--- a/src/com/massivecraft/massivecore/store/SenderColl.java
+++ b/src/com/massivecraft/massivecore/store/SenderColl.java
@@ -16,6 +16,13 @@ import java.util.List;
 
 public class SenderColl<E extends SenderEntity<E>> extends Coll<E> implements SenderIdSource
 {
+	// This should be false under most circumstances.
+	// In some cases such as Factions we want it though.
+	// Especially so we don't change the years old way Factions does it.
+	private boolean playercleanTaskEnabled = false;
+	public boolean isPlayercleanTaskEnabled() { return this.playercleanTaskEnabled; }
+	public void setPlayercleanTaskEnabled(boolean playercleanTaskEnabled) { this.playercleanTaskEnabled = playercleanTaskEnabled; }
+	
 	// -------------------------------------------- //
 	// CONSTRUCT
 	// -------------------------------------------- //
@@ -194,5 +201,15 @@ public class SenderColl<E extends SenderEntity<E>> extends Coll<E> implements Se
 			senderColl.setSenderReference(senderId, sender);
 		}
 	}
+	
+	// -------------------------------------------- //
+	// ACTIVITY MILLIS
+	// -------------------------------------------- //
 
+	// Must be overriden if they want to use it.
+	public long getPlayercleanToleranceMillis()
+	{
+		return -1;
+	}
+	
 }
diff --git a/src/com/massivecraft/massivecore/store/inactive/Inactive.java b/src/com/massivecraft/massivecore/store/inactive/Inactive.java
new file mode 100644
index 00000000..a4f8e6c0
--- /dev/null
+++ b/src/com/massivecraft/massivecore/store/inactive/Inactive.java
@@ -0,0 +1,6 @@
+package com.massivecraft.massivecore.store.inactive;
+
+public interface Inactive
+{
+	long getLastActivityMillis();
+}
diff --git a/src/com/massivecraft/massivecore/store/inactive/InactiveUtil.java b/src/com/massivecraft/massivecore/store/inactive/InactiveUtil.java
new file mode 100644
index 00000000..70a04947
--- /dev/null
+++ b/src/com/massivecraft/massivecore/store/inactive/InactiveUtil.java
@@ -0,0 +1,79 @@
+package com.massivecraft.massivecore.store.inactive;
+
+import com.massivecraft.massivecore.event.EventMassiveCorePlayercleanToleranceMillis;
+import com.massivecraft.massivecore.mixin.MixinMessage;
+import com.massivecraft.massivecore.store.SenderColl;
+import com.massivecraft.massivecore.store.SenderEntity;
+import com.massivecraft.massivecore.util.Txt;
+import org.bukkit.command.CommandSender;
+
+import java.util.Collection;
+
+public class InactiveUtil
+{
+	public static void considerRemoveInactive(final SenderColl<? extends SenderEntity<?>> coll, final Iterable<CommandSender> recipients)
+	{
+		considerRemoveInactive(System.currentTimeMillis(), coll, recipients);
+	}
+	
+	public static void considerRemoveInactive(long now, final SenderColl<? extends SenderEntity<?>> coll, final Iterable<CommandSender> recipients)
+	{
+		final long playercleanToleranceMillis = coll.getPlayercleanToleranceMillis();
+		if (playercleanToleranceMillis <= 0)
+		{
+			for (CommandSender recipient : recipients)
+			{
+				MixinMessage.get().msgOne(recipient, "<h>%s<b> does not support player cleaning.", coll.getName());
+			}
+			return;
+		}
+		
+		final long start = System.currentTimeMillis();
+		int count = 0;
+		
+		final Collection<? extends SenderEntity<?>> senderEntitiesOffline = coll.getAllOffline();
+		
+		// For each offline player ...
+		for (SenderEntity entity : senderEntitiesOffline)
+		{
+			// ... see if they should be removed.
+			boolean result = considerRemoveInactive(now, entity, recipients);
+			if (result) count++;
+		}
+		
+		long time = System.currentTimeMillis() - start;
+		for (CommandSender recipient : recipients)
+		{
+			MixinMessage.get().msgOne(recipient, "<i>Removed <h>%d <i>players from <h>%s <i>took <v>%dms<i>.", count, coll.getName(), time);
+		}
+	}
+	
+	public static boolean considerRemoveInactive(long now, SenderEntity<?> entity, Iterable<CommandSender> recipients)
+	{
+		if ( ! (entity instanceof Inactive)) return false;
+		if (entity.detached()) return false;
+		
+		// Consider
+		if (!shouldBeRemoved(now, entity)) return false;
+		
+		String message = Txt.parse("<i>Player <h>%s<i> with id %s was removed due to inactivity.", entity.getName(), entity.getId());
+		
+		for (CommandSender recipient : recipients)
+		{
+			MixinMessage.get().messageOne(recipient, message);
+		}
+		
+		// Apply
+		entity.detach();
+		
+		return true;
+	}
+	
+	public static boolean shouldBeRemoved(long now, SenderEntity entity)
+	{
+		EventMassiveCorePlayercleanToleranceMillis event = new EventMassiveCorePlayercleanToleranceMillis(now, entity);
+		event.run();
+		return event.shouldBeRemoved();
+	}
+	
+}