Excluding chat results while searching

Most of the time while we are searching for a mail chat results also pop up which of course is not needed by us. You can use this small tip to prevent it.

Gmail Chat session contain a hidden label called "Chat". So all functions you use on Labels will work.If want to exclude all Chats from your Search Results, then use the following while searching
"-label:Chat"

If you wanted to Search only Chats, just add the your search
"+label:Chat"