diff --git a/MarketData/MarketData/Services/MainService.cs b/MarketData/MarketData/Services/MainService.cs
index b8ce80a..8fa81bb 100755
--- a/MarketData/MarketData/Services/MainService.cs
+++ b/MarketData/MarketData/Services/MainService.cs
@@ -109,7 +109,7 @@ namespace MarketData.Services
       }
       string arg = args[0].ToUpper();
 
-// log files are now of the form market_data+task.log.  Also log files will expire when > 1 days old
+// log files are now of the form market_data+task.log.  The log expiry days is set in the CreateLogging method below.
       if(!CreateLogging(arg))
       {
         Console.WriteLine("CreateLogging returned false.");
@@ -459,8 +459,14 @@ namespace MarketData.Services
 // ******************************************************************* E N D  T A S K S ********************************************************************
 // *********************************************************************************************************************************************************
 
+    /// <summary>
+    /// Creates the log file for the particular task.  The log expiry days has been set to 2 days below.
+    /// </summary>
+    /// <param name="task"></param>
+    /// <returns></returns>
     private static bool CreateLogging(String task)
     {
+      int logExpiryDays = 2;
       if(String.IsNullOrEmpty(task))return false;
       task=task.ToLower();
       MDTrace.LogLevel = LogLevel.DEBUG;
@@ -470,7 +476,7 @@ namespace MarketData.Services
       String currentWorkingDirectory = Directory.GetCurrentDirectory();
       Console.WriteLine($"Current directory is {currentWorkingDirectory}");
       Utility.EnsureLogFolder(currentWorkingDirectory+logFolder);
-      Utility.ExpireLogs(currentWorkingDirectory+logFolder,1);
+      Utility.ExpireLogs(currentWorkingDirectory+logFolder,logExpiryDays);
       Trace.Listeners.Remove("Default");
       Console.WriteLine($"Adding Trace Listener :{currentWorkingDirectory+logFolder+"/"+strLogFile}");
       Trace.Listeners.Add(new TextWriterTraceListener(currentWorkingDirectory+logFolder+"/"+strLogFile));