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Don't look in the folder while the dwg is open
Seriously, is there a problem with them not going away after the dwg is closed? I know you can't stop them from being created, not sure about hiding them but they should disapear as soon as you close the dwg.
This is a very late response but i just stumbled upon these "annoying" files and the way to hide them is to go to the start menu / Control Panel / Folder Options / click on the View Tab / look under the Advanced settings menu options: select the Don't show hidden files, folders, and drives option and poof they are out of your presence. 
@chavezfrancisco74 wrote:
This is a very late response but i just stumbled upon these "annoying" files and the way to hide them is to go to the start menu / Control Panel / Folder Options / click on the View Tab / look under the Advanced settings menu options: select the Don't show hidden files, folders, and drives option and poof they are out of your presence.
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Same message as Post 4. Personally, I wouldn't want to hide them. If they're not disappearing when drawings are closed normally, there's something wrong that should probably be investigated. If, when all drawings are closed, there are still some around, they're probably left over from an AutoCAD crash rather than normal closing, but [see Post 2] I would want to delete them right away -- they serve no purpose whatsoever in that situation. If you never see them, you could accumulate a lot of them over time and never know it, utterly wasting the disk capacity they consume. [Admittedly it's not much waste -- they're tiny files -- but more than the zero it would be with them deleted.]
Kent Cooper, AIA 
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