# IMembershipTable.CleanupDefunctSiloEntries(DateTimeOffset)

[Type overview](/orleans/docs/api/csharp/microsoft.orleans.core/orleans.imembershiptable/) | [Methods](/orleans/docs/api/csharp/microsoft.orleans.core/orleans.imembershiptable/methods/)

```csharp
public abstract Task CleanupDefunctSiloEntries(DateTimeOffset beforeDate)
```

Delete all dead silo entries older than `beforeDate`

### Parameters

- `beforeDate` (`DateTimeOffset`)